MODUL HEBAT BIO 2021_PDF_ENG

4. Given are true about Tropism Response EXCEPT

I. Response direction is based on stimuli
II. Responses to survive from predator
III. The responses are influence by the plant hormone
IV. Fast and obvious responses

A. I and II
B. II and III
C. II and IV
D. I and IV

5. Nastic Movements are the plant responses towards environmental changes. Which
of the following is an example of Nastic Movement?

A. Plant producing flowers to attract insets.
B. Plant losing its leaves when the temperature drops
C. Plant closing its leaves when touched
D. Plant wilting due to temperature rises

6. Diagram 2 shows an experiment to show the effect of Auxin to the growth of Maize
coleoptile.

What is the response of the coleoptile at the end of the experiment?

A. Coleoptile does not grow
B. Coleoptile grows and bends to the right
C. Coleoptile grows and bends to the left
D. Coleoptile grows upwards

7. A farmer puts a few rotten ripe bananas close to the unripe bananas. What is his
purpose of doing so?

A. To discourage insects from attacking the unripe bananas
B. To prevent rats from eating the unripe bananas
C. To produce more ethylene gas for the unripe bananas
D. To make the unripe bananas become sweeter after ripening.

8. What is the name of a method that is use to produce seedless fruits?
A. Double fertilization
B. Culture tissue
C. Parthenocarpy
D. Cross pollination

9. Which of the following about hormones and its functions is WRONG?

A Gibereline To inhibit the roots development

B Cytokinine To inhibit the Apecs Dominant growth

C Abscisic Acid To inhibit plant growth

D Ethylene To inhibit the fruit ripeness

10. All below are Auxin hormone’s functions EXCEPT ;

A. To increase cells division
B. To cause Negative Geotropism response
C. To stimulate cells elongation
D. To cause Positive Phototropism response

STRUCTURE QUESTIONS (7 MARKS)

1. Diagram 1 shows how Watermelon are produced on a farm by spraying hormone
X on the flowers.

Diagram 1

(a) . What is hormone X?

[1 mark ]
(b) . Explain the function of hormone X in the production of ripe Watermelon.

[1mark]

(c) . How does the fruit produced by this method differs from the fruit that produced
naturally?

[1 mark]

(d) . Most of the Bananas fruit that are sold at supermarkets are often harvested while
still green and unripe. This fruit are then ripened before they are sold.

(i) Explain why the Bananas fruit are harvested while still unripe?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[2 mark]
(ii) Explain why the Bananas fruit are harvested while supermarkets?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[2 mark]
ESSAY QUESTIONS (8 MARKS)

Diagram 1

1. Diargam 1 shows the growing of a seed that naturally the shoot will grow upwards
to the sunlight, and the root will bend downwards following the gravity. This involving
two type of responses which is Phototropism and Geotropism.

(i) Differentiate between Phototropism and Geotropism
[4 marks]

(ii) Based on diagram 1, explain how the shoot of the plant bends and growupward
[4 marks]

CHAPTER 6 SEXUAL REPRODUCTION IN FLOWERING PLANTS

OBJECTIVE QUESITIONS (10 MARKS)

1. Which of the following component represents the the male parts of a
flower?

A. Anther, Filament
B. Anther, Filament and Stigma
C. Stigma, Style, Ovary and Ovule
D. Stigma, Style, Ovary, Ovule and Anther

2. Which of the following statement is true about flowering plant?

A. Production of flower is the example of vegetative reproduction in a plant.
B. Flower produces by angiosperm, gymnosperms and ferns.
C. Sexual reproduction in flowering plants produces identical seeds.
D. A Flower is the part of the shoot that has been modified as a sexual

reproduction organs.

3. Diagram 1 shows the longitudinal section of a flower.

Diagram 1

At which part the pollination and fertilisation take place?

Pollination Fertilisation
AP Q
BQ S
CP S
DS Q

4. Diagram 2 shows the pollen grain produces by plant X.

Diagram 2

Name the pollination agent or pollination mechanism for plant X?

A. Self pollination mechanism
B. Insects
C. Wind
D. Water

5. In angiosperm, every sprout pollen grains contains two male nucleus.
Declare the function of the two male nucleus?

A. One nuclei fuses with one ovum (egg cell), other fuses with two polar
nuclei.

B. One nuclei fuses with one ovum (egg cell), other fuses with antipodal cells.
C. One nuclei fuses with one ovum (egg cell), other fuses with synergid cells.
D. One nuclei fuses with antipodal cells, other fuses with synergid cells.

6. Diagram 3 shows the structure of an ovule.

Diagram 3
What will happen to P, Q, R and S inside the embryo sac after fertilisation?

P Q R S
A. Form one primary Degenerates Form one Degenerates
zygote
endosperm Form one Degenerates
nucleus primary Form one
B. Degenerates endosperm zygote
nucleus
C. Degenerates Form one Form one Denegerates
zygote primary
endosperm Form one
D. Form one primary Degenerates nucleus zygote
endosperm Degenerates
nucleus

7. Which of the following is the correct match?

Flower part After fertilisation
A. Ovule Become testa
B. Ovary Become fruit
C. Outer integument Become pericarp
D. Ovarian wall Become a zygote

8. Tegmen or thin layer inside a seed is form from

A. Inner integument
B. Outer integument
C. Endosperm
D. Zygote

9. Diagram 4 shows the embryo sac of an ovule. At which structure P, Q, R
and S, will fuse with the male gamete to formed diploid zygote?

Diagram 4
A. P
B. Q
C. R
D. S
10 Diagram 5 shows cross section of a lime.
.

Diagram 5
Which of the following structure of a flower in lime will formed structure P?
A. Receptacle
B. Ovary
C. Ovule
D. Style
STRUCTURE QUESTIONS (7 MARKS)

1. The diagram below shows fertilisation process in a flowering plant.

Diagram 1
(a) Name the process where pollen grains are transferred from anther to stigam.

_____________________________________________________________
[1 mark]

(b) (i) Name the process which occurs when the male nuclei enter the embryo
sac.
_____________________________________________________________
[1 mark]
(ii) Based on Diagram 1B, name the parts of the flower which are involved in
the process named in 1(b) (i)
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
[2 marks]

(iii) Explain the process stated in 1 (b) (i).
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________

[3 markah]

ESSAY QUESTION (8 MARKS)
The diagram below shows two types of flowering plants, hibiscus and lalang.

Describe the specific characteristics of pollen of both types of flowers to increase the
chances of reproduction.

[8 marks]

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CHAPTER 7 ADAPTATIONS OF PLANTS IN DIFFERENT HABITATS

OBJECTIVES QUESTIONS (10 MARKS)

1. ___________________ is the adjustment of an organism to the environment.

A. Habitat
B. Ecosystems
C. Adaptations
D. Biodiversity

2. The following is the classification of plants by habitat except:

A. Mesophytes
B. Hidrophytes
C. Saprophytes
D. Xerophytes

3. The diagrams below show some types of plants.

PQ R S

Which of the following can be classified as a mesophytic plant?

A. P and Q
B. Q and R
C. Q, R and S
D. All of the above

4. Which of the following shows the correct habitat adaptation characteristic of
halophytic plants?

HABITATS’ SALT CONCENTRATION HABITATS’ OXYGEN CONTENT
A. High High
B. Low High
C. High Low
D. Low Low

5. Which is a halophyte plant? B
A

CD

6. The diagram below shows the adaptation of plant roots to a habitat.

Which of the following is not a characteristic of root adaptation of the plant to
adapt to environment conditions?

A. Provides support to survive in soft and muddy soil.
B. Prevent plants from falling due to strong winds.
C. Plant root cell sap has lower salt content than seawater.
D. There are lenticels on the roots.

7. The diagram below shows a type of floating plant.

Which of the following is an adaptive characteristic of a floating plant to carry out
photosynthesis?

A. The leaves are small and thick.
B. The stoma is scattered mostly on the lower epidermis of the leaves.
C. The upper epidermis of the leaves is covered with waxy cuticles that are

waterproof.
D. Plant stems composed of sclerenchyma tissue.

8. Which of the following shows the difference in adaptive characteristics of floating
plants and submerged plants correctly?

FLOATING PLANT SUBMERGED PLANTS
A. The leaves are small and thick. The leaves are wide and thin.
B. The stoma is scattered mostly on The stoma is scattered mostly on the
upper epidermis of the leaves.
the lower epidermis of the leaves. Plant stems composed of
C. Plant stems composed of aerenchymal tissue.
Has no waxy cuticles on the leaves
sclerenchyma tissue.
D. The upper epidermis of the leaves

is covered with waxy cuticles that
are waterproof.

9. The following are the adaptive characteristics of xerophytic plant habitats
except:

a Hot habitat.
b Dry habitat.
c Maximum water presence.
d High temperature.

10. The following are the importance of thorns on xerophyte plants except:

A. Reduces the amount of surface are exposed to the sun.
B. Reduces water loss.
C. Increase the total number of stomas.
D. Helps collect dew for water supply purposes.

STRUCTURE QUESTIONS (7 MARKS)
1. State one type of plant example for:
(a) Mesophyte: ______________________________________
(b) Xerophyte: _______________________________________
[2 marks]
2. The diagram below shows one of the plants that lives in a swampy
habitat.

(a) State the plant class based on the habitat of the plants above.
______________________________________________________
__________
[1 mark]

(b) State two adaptive characteristics of this plant to increase the rate
of photosynthesis.

________________________________________________________
________________________________________________________
________________________________________________________
____________________________________

[2 marks]
(c) In the event of an oil spill occur near the habitat of this plant, predict

the effect that will occur on the plant above. Justify your answer.

________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
____

[3 marks]

3. Define aerenchymal tissue.
________________________________________________________
____________
[1 mark]

ESSAY QUESTIONS (6 MARKS)

Diagram 1.1 Diagram 1.2

Diagram 1.1 and Diagram 1.2 show two types of plants that live in different habitats.
State three differences in the adaptive characteristics of the plants according to its
habitat.

[6 marks]

CHAPTER 8 BIODIVERSITY

OBJECTIVE QUESTIONS (10 MARKS)
1. Diagram 1 shows a few organisms. Each organism can be classified into the

universal system of classification.

Mycena haematopus Paramecium caudatum Vibrio cholerae

Diagram 1 Fungi
Vibrio cholerae
Which classification is correct? Mycena haematopus
Paramecium caudatum
Eubacteria Protista Paramecium caudatum

A. Paramecium caudatum Mycena haematopus

B. Vibrio cholerae Paramecium caudatum

C. Mycena haematopus Vibrio cholerae

D. Vibrio cholerae Mycena haematopus

2. Which of the following scientific names is written correctly
A. Oryza sativa

B. Rana Eryhraea
C. nelumbo nucifera
D. Helianthus annuus

3. Diagram 2 shows the hierarchy in the classification of organism.

Diagram 2

What are J and K?

JK

A. Family Phylum

B. Genus Species

C. Class Order

D. Phylum Family

4. Carica papaya is the scientific name of papaya.

Which of the following hierarchial levels are true for Carica and papaya?

Carica papaya
A. Class Order
B. Order Class
C. Genus Species
D. Species Genus

5. A student has found a card as shown in Diagram 3 . The card contains the
scientific terms used in the classification of the organism according to the Binomial
Linnaeus system, but does not follow the correct order.

Common name: Cockroach

Animalia
Arthropoda

Blattidae
Insecta
Periplaneta americana
Periplaneta

Diagram 3

Among the following science terms, which refer to Class?
A. Periplaneta
B. Animalia
C. Blattidae
D. Insecta

6. The smallest microorganism among the microorganisms below is

A. Fungi
B. Saprophyte
C. Virus
D. Bakteria

7. Diagram 4 below shows two type of foods.

Bread Soy sauce

Diagram 4

Which microorganism is used to produces the foods?
A. Protozoa
B. Fungi
C. Virus
D. Bakteria
8. Which of the following statements is not true about fungi?

A. Fungi contain chlorophyll
B. Fungi have cell walls made of chitin
C. Fungi are heterotrophs, either parasites or saprophytes
D. Fungi are found in dark or moist places and on decomposing or dead

organisms

9. Which of the following is true?

Disease Pathogen
I Dengue fever Anopheles sp
II Dengue feve Aedes sp
III Cholera Vibrio cholerae
IV Malaria Aedes sp
A. I and II
B. I and III
C. II and III
D. II and IV

10. Diagram 5 shows a patient has symptoms such as skin and eyes sclera become
yellowish as well as swollen chest. What disease did he probably get?

Diagram 5

A. Hepatitis B
B. Tuberculosis
C. Dysentery
D. Tinea versicolour

STRUCTURE QUESTIONS (7 MARKS)

1 Microorganisms are microscopic organisms that cannot be seen by the naked
. eye. Diagram 1.1 below are microorganisms.

Mucor sp Chlamydomonas sp. Fucus sp. Saccharomyces sp

Diagram 1.1

(a)(i) Classify microorganisms using the following characteristics :

 Can synthesize its own food
 Cannot synthesize its own food

Complete the table below.

Can synthesize its own food Cannot synthesize its own food

[2 marks]
(ii) How do the algae synthesize food?

_____________________________________________________________
[1 marks]

(b) What are the differences between algae and fungi?
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
[2 marks]

(c) Diagram 1.2 shows nitrogen cycle

Diagram 1.2
Explain what would happen to the ecosystem if all the decomposers such as
bacteria and fungi died.
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________

[2 marks]

ESSAY QUESTION (8 MARKS)
1. A dichotomous key is a tool used by taxonomists to identify organisms based on

similarities and differences.

Diagram 1

Based on organisms in Diagram 1, build a dichotomous key using a simple
identification key.

[8 marks]

CHAPTER 9 ECOSYSTEM
OBJECTIVE QUESTIONS (10 MARKS)

1. The terms below are used in ecosystem. Which definition is CORRECT?
A Population is defined by the natural surrounding or the living place of an organism.
B Community is defined by the populations of all organisms from different species
living in the same habitat whilst interacting with each other.
C Ecosystem is a group of organisms of the same species which live in the same
habitat.
D Habitat is the role of an organism in an ecosystem which includes its behaviour
and interactions with biotic and abiotic components in the surrounding of its
habitat.

2. Which of the statement below is categorized as biotic component?

I pH value
II Consumer
III Decomposer
IV Temperature

A I dan II C II dan III
B II dan IV D I dan IV

3. The diagram below shows a few examples of nutrition. Q
Nutrition

P

RS

Name P, Q, R dan S. Q R S
Autotroph Phototoautotroph Parasite
P
A Heterotroph Heterotroph Chemoautotroph Saprofite
B Autotroph Autotroph Fotoautotroph Holozoic
C Autotroph

4. The diagram below shows an organism in an ecosystem.

What is the function of this organism in a food chain?

A Microorganisms decompose waste substances as dead organism
B A carnivore that feeds on primary consumers.
C Aa autotroph that synthesise organic substances.

5. The diagram below shows a food chain. Wild cats
Rabbit

Plant Goat Fox Lion
Eagle

Mouse Snake

Which of the organisms below can be categorized as the third trophic level?

A Plant, Goat, Fox
B Lion, Eagle, Fox
C Wild cats, Fox, Snake
D Mouse, Goat, Rabbit

6. The diagram below shows an ecology pyramid.

Energy is
transfered

Which of the statements is CORRECT regarding the ecology pyramid above?

I The energy source in an ecosystem is light energy from the sun which is absorbed
by green plants

II Only 10% of the energy is transferred to the next trophic level.
III This pyramid can also explain the biomass pyramid.
IV 95% energy is dissipated into the environment.

A I dan II C II dan III
B II dan IV D I dan IV

7. The diagram below shows an example of organisms interacting.

II
I III

Apakah jenis interaksi antara komponen biosis organisma I, II dan III ?

I II III
A Commensalisme Mutualisme Saprofitisme

B Mutualisme Prey and predator Parasitisme
Simbiosis
C Competition Commensalisme

8. The diagram below shows different zones in a mangrove ecosystem

W

Choose a CORRECT example and its root adaptation for Zon W.

Zone Root adaptation

A Rhizophora sp. Have tangled prop roots so it can trap twigs and mud

B Sonneratia sp. Has pneumatophore roots
C Brugeira sp. Has buttress roots
D Avicennia sp. Has prop roots and pneumatophore roots

9.
Kwang Soo has done an experiment on estimating the population size of Dura sp. at a beach.
He successfully captured 40 tortoises. He then marked the tortoises and released them back.
After 5 days, he successfully captured 52 tortoises, 28 of them are marked from the first
capture. What is the estimated population size of the tortoise at the beach?

A 67 C 74
B 89 D 75

10. A quadrat of 1m² is used to estimate the frequency of a plant.

Quadrat 123456

Total number of plants 10 12 5 7 4 0

Calculate the frequency of the plant. C6
D9
A5
B7

STRUCTURED QUESTIONS (7 MARKS)
1. The diagram below shows an aquatic ecosystem.

Heron

Water hyacinth
Plankton

Submerged Hydrilla sp.
plant

Herbivor fish Carnivor fish
Soil bacteria Earthworm

(a) What is the definition of ecology?
________________________________________________________________________
________________________________________________________________________
[1 mark]

(b) Based on the ecosystem above, give one example for each trophic level in the table below.

(i) First trophic level :

(ii) Second trophic level :

(iii) Third trophic level :

(iv) Decomposer :

[4 marks]

(c) The third trophic level is decreasing. Suggest one method to increase this throphic.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
[1 mark]

(d) What is the importance of protecting our ecosystem to humans and environment?
________________________________________________________________________
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[1 mark]

ESSAY QUESTION ( 8 MARKS)

The diagram below shows organism P and organism Q interacting.

Q

P

(a) Name the type of interaction between organism P and organism Q. Explain the interaction as
stated.
[4 marks]

(b) Mangrove ecosystem plays an important role in a balance ecosystem. Explain briefly the
importance of mangrove ecosystem.
[4 marks]
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CHAPTER 10 ENVIRONMENTAL SUSTAINABILITY

OBJECTIVE QUESTIONS (10 MARKS)

1. Which of the following human activities threatens ecosystem?

I. Forest conservation
II. Forest exploration
III. Rapid increase in human population
IV. Management of planned development

A. I and II
B. II and III
C. III and IV
D. I and IV

2. Diagram 1 shows changes in the concentration of two substances, J and K, in
the water of a river polluted by sewage.

Diagram 1

Which of the following are substances J and K?

J K
A Carbon dioxide Nitrogen compounds

B Nitrogen compounds Oxygen

C Oxygen Nitrogen compounds

3. A group of students carried out an experiment to determine the biochemical
oxygen demand (BOD) value of different zones in a river. Diagram 2 shows
the graph of the concentration of dissolved oxygen in zones, A, B, C and D.

Diagram 2

Which zone, A, B, C or D, has the highest BOD value?
4. Diagram 3 shows the changes in the population of bacteria and algae in the

river that has been polluted by domestic waste.

Diagram 3
Which of the following is true about the changes in the population of bacteria
and algae?
A. Changes in the population of bacteria and algae are stimulated by

physical and chemical changes of waste products.
B. The high level of organic content increases the population of saprophytic

bacteria.
C. The population of algae is less at the initial stage because the waste

products block the penetration of sunlight into the river.
D. The population of algae decreases because disintegration of organic

matter decreases the amount of mineral ions for the algae.
5. What is the effect of an increase in biochemical oxygen demand (BOD)?

A. Alga bloom occurs
B. Bacteria decomposes
C. Aquatic organisms die
D. Rapid growth of microorganisms
6. Diagram 4 shows an environmental phenomenon.

Diagram 4

Which of the following is the phenomenon?

A. Effect of radiation
B. Air pollution
C. Greenhouse effect
D. Thinning of the ozone layer

7. Which of the following are true about BOD?

A. The higher the BOD value, the lower the degree of pollution.
B. The higher the BOD, the higher the dissolved oxygen in the water sample.
C. The higher the BOD level, the higher the level of pollution.
D. At high BOD levels, the fish population in the pond increases.

8. Which of the following practices does not contribute to environmental
sustainability?

A. Using Plastic bags while shopping
B. Conduct campaign to plant trees in school
C. Practice buying goods with sustainable product logos
D. Carrying out upcycling activity of waste materials at home

9. Why is recycling of substances encouraged?
I. Increases the environmental pollution
II. Increases the problem of waste disposal
III. Saves substances, energy and reduces cost
IV. A lot of waste can be reused

A. I and II
B. II and III
C. III and IV
D. I and IV

10. Which of the following is correct for green technology?

I. The use of technology that makes products and process more
environmentally friendly.

II. The use of technology to develop methods of low power consumption.
III. The use of technology to increase the consumption of non-renewable

resources of energy
IV. The use of technology to use the green options on Earth

A. I and II
B. II and III
C. III and IV
D. I and IV

STRUCTURE QUESTIONS (7 MARKS)

1. a) Diagram 1 shows an oil tanker that has collided with another ship. There was
an oil spill onto the ocean.

Diagram 1

I. State one main source of oil spill beside the accident shown in Diagram 2
___________________________________________________________________
___________________________________________________________________

[1 mark]

II. State two harmful effects of oil spill.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[2 marks]

III. State two methods of cleaning the oil spill.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[2 marks]

b)Table 1 shows the effect of pollution on a few types of fauna in four types of different
water sources.

Type of fauna

Tubiflex Fish Insect larva Insect

worm species nymph

P Absent 5 6 8

Q Absent 2 2 4

R Present 0 1 1

Table 1

i)What is meant by BOD (Biochemical oxygen demand)?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[1 mark]

ii)State the relationship between BOD with the number of species of fauna as in Table
1.
___________________________________________________________________
___________________________________________________________________

[1 mark]

iii)State one way that can be used to increase the number of species of fauna in the
water.
___________________________________________________________________
___________________________________________________________________

[1 mark]

ESSAY QUESTIONS (8 MARKS)

1.Diagram 2 shows the greenhouse effect.

Diagram 2

(i) Based on Diagram 2, explain what is meant by the greenhouse effect. [2 marks]
(ii) Explain the effects of the greenhouse effect. [6 marks]

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CHAPTER 11 INHERITANCE

OBJECTIVE QUESTIONS ( 10 MARKS)

1. Diagram 14.1 shows a pair of homologous chromosomes. The alphabets
represent the gene in the chromosomes.

PqR s TU
p QR
St u

DIAGRAM 14.1

Q and q represent

A. linked genes
B. alleles
C. genotypes
D. phenotype

2. If T represents the allele for tallness and t the allele for dwarfness, then an
individual with Tt is

A. homozygous for tallness
B. heterozygous for tallness
C. homozygous for dwarfness
D. heterozygous for dwarfness

3. Two pure-bred plants with the genotypes BBRR and bbrr respectively are crossed.
F1 offspring were allowed to self-pollinate. How many types of phenotypes are
produced if B and R are dominant?

A. 2
B. 4
C. 8
D. 16

4. Which of the following is not true about DNA fingerprinting?

A. It is a print pattern from the right thumb
B. It can be made from a blood sample, hair or semen sample
C. It is used in forensic work
D. It can be used to confirm animal pedigrees

5. The allele for black hair in human is dominant to the allele for brown hair. A man
with black hair is heterozygous while his wife has brown hair. The probably of
getting a child with brown hair is

A. 1
B. ¾
C. ½
D. ¼

6. A married couple has different blood group. Ahmad has a blood group A,
whereas his wife has a blood group B. Determine the possible blood group of
their children.

A. It could only be blood group AB
B. It could only be blood group A or B
C. It could only be blood group A, B or O
D. It could only be blood group O

7. Which of the following represented the alleles of the human blood group?

A. ABO
B. Xa Xb Xo
C. Aa B bOo
D. IA IB IO

8. Erythroblastosis fetalis is the problem of new born baby that related to

A. blood transfusion incompatibility
B. Rh factor
C. malnutrition
D. mother’s drug abuse.

9. Diagram 14.3 shows the human karyotype.

DIAGRAM 14.3
The abnormal number of the chromosome 21 is a result of non-disjunction during

A. meiosis
B. mitosis
C. cytokinesis
D. plasmolysis

10. Heredity diseases are disease that can be transmitted from parent to their
offspring. Which of the following is not the heredity disease?

A. Haemophillia
B. Colour blindness
C. Muscular dystrophy
D. Malaria

STRUCTURE QUESTIONS (7 MARKS)

1. Table 14.1 shows an incomplete Punnett’s of crossing made between a
heterozygous plant for tallness and the red flowers and a homozygous
recessive plant for the same traits.

Gametes TR Tr tr
tr [3 marks]
ttRr

TABLE 14.1
I. Complete Table 1 to show the various offspring produced.

II. Explain the results.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

[3 marks]

III. What is the percentage of the offspring produced for short pea plant with white
flowers?

___________________________________________________________________
[1 mark]

ESSAY QUESTION (8 MARKS)

1. Dina has a problem to get a second child with the history of three times baby
stillborn. After consulted by a specialist, she found that she is facing with the
problem of Rh factor. As a specialist explain to Dina to understand her problem.

[8

marks]

CHAPTER 12 VARIATION

OBJECTIVE QUESTIONS (10 MARKS)
1. The list below is information related to one type of human variation.

 Insignificant feature differences
 Normal distribution
 Quantitative

Which is an example of a variation mentioned?
A. Weight
B. Eye color
C. Fingerprint pattern
D. Blood group
2. Figure shows 4 types of fingerprint phenotypes in humans

Which of the following is the same type of variation as shown?

A. Weight
B. Skin color
C. Eye color
D. Intelligence

3. The following is a table showing a pair of examples of traits and traits in humans
right except

Traits in humans

Features Dominant Recessive

A Height Tall Short
No dimples
B The presence of dimples There are dimples Cannot roll tongue
The earlobes do not
C Ability to roll the tongue Can roll the tongue stick

D Ear lobe fixture The earlobes are

attached

4. Mutagens are divided into three agents, namely physical agents, chemical
agents and biological agents

I. Chemical agents (ionizing rays)
II. Biological agents (Benzene)
III. Chemical agents (Formaldehyde)
IV. Biological agents (Bacteria)

Choose the correct statement

A. I and II
B. I and III
C. II and III
D. III and IV

5. The following figure shows a type of chromosomal mutation.

What are the types of chromosomal mutations?

A. Deletion
B. Duplication
C. Inversion
D. Translocation

6. The following are the disease characteristics of a disease due to chromosomal
mutations.

• Patients cry like cats meowing during infancy
• Slow growth
• Suffering from mental and physical disabilities
• Most patients die in childhood

What are the diseases due to chromosomal mutations according to these
characteristics

A. Klinefelter Syndrome
B. Jacob Syndrome
C. Cat's Cri syndrome
D. Down Syndrome

7. The figure shows the results of an experiment that has been conducted to study
the variation of a feature in humans.

Which of the following is not a feature studied?
A. Foot size
B. Body height
C. Weight
D. Ability to roll the tongue
8. The diagram shows an individual suffering from a type of syndrome.

Which of the following is the number of individual chromosomes?
A. 47 + XX
B. 47 + XY
C. 45 + XX
D. 45 + XY
9. Which of the following chemicals is a mutagen?
I. Benzene
II. Nitrous oxide
III. Carbon monoxide
IV. Carcinogen
A. I and II
B. I and IV
C. II and III
D. III and IV

10. The figure shows a bar graph showing the variation for a feature.

Which of the following is represented by the bar graph above?
A. Height
B. Rolling the tongue
C. Blood group
D. The color of the pupil

STRUCTURE QUESTIONS (7 MARKS)
1. a) The diagram shows one of the genetic factors in the cause of variation that

causes variation between organisms in the same species.

(i) Specify the type of genetic factor shown in Figure.
___________________________________________________________________

[1 mark]
(ii) Give another example of genetic factors that cause discontinuous variation.
___________________________________________________________________

[1 mark]
(iii) How do the types of genetic factors named in question 1 (a) (i) cause variation?
Explain.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
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[3 mark]

(b) The photo shows the variations on the shells.

(i) What kind of variation occurs in the shell?
__________________________________________________________________

[1 mark]
(ii) State one difference between environmental factors and genetic factors in the
variation of a natural population.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________

[1 mark]

ESSAY QUESTION (8 MARKS)
1. Alvin have two dogs from the same breed. Both dogs have the different pattern and
body size. What is the type of variation shown by the fur pattern of the dogs? Explain
the causes that contribute to the variation of the dog’s fur pattern?

[8 markah]

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CHAPTER 13 GENETIC TECHNOLOGY

OBJECTIVE QUESTIONS (10 MARKS)

1. The followings are the advantages of genetically modifies foods (GMF) except …

A. increase of high quality crop yield and transgenic livestock
B. decrease the insect problems in agricultural planting
C. the inserted gene can be transferred to humans
D. decrease the usage of pesticides

2. The characteristics of genetically modified foods are …

I. resistant to herbicide
II. resistant to disease
III. tolerance to light metals
IV. application in cosmetics

A. I dan II
B. II dan III
C. III dan IV
D. I dan IV

3. The correct sequence in producing insulin is …

I. recombinant plasmid is introduced in bacteria
II. insulin is extracted from the bacteria and purified
III. insulin gene and plasmid are cut with restriction enzyme
IV. bacterial clone multiplies and produces insulin in the cells
V. human insulin gene is inserted into a plasmid

A. III, V, I, IV, II
B. III, V, I, II, IV
C. V, II, IV, I, III
D. V, I,III, II, IV

4. The followings are various disciplines in biotechnology except …

A. Factory
B. Medicine and human health
C. Foods and diets
D. Microorganisms-based industry

5. What is the meaning of transgenic organisms?

A. Organisms which are modified to look more beautiful
B. Organisms which contain DNA from other plants or animals
C. Organisms which maintain desired characteristics in DNA sequence
D. Organisms which contain recombinant DNA

6. Which type of bacteria is inserted into corn genes to increase the resistance of
corns toward the pests?

A. Bacillus thuringiensis
B. Arabidobsis sp.
C. Mimosa pudica
D. Alcanivorax borkumensis

7. The followings are the contributions of biotechnology to the environment except …

A. Microbes can expedite decay of waste products created by humans
B. Microbes can degrade faeces completely
C. Reduce pollution
D. Expedite reproductions of plants

8. Why bacteria are commonly used in genetic engineering technique?

A. Bacteria can be found easily
B. Bacteria can be modified easily
C. Bacteria reproduced rapidly
D. Bacteria are difficult to destroy

9.

Diagram 1

Diagram 1 shows a scientist is conducting DNA profiling. The correct sequence of
DNA profiling is …

I. Radioactive probes are added to the nylon membrane
II. DNA is extracted from the skin sample or semen
III. Rsctricion enzyme is added to the sampel to cut the DNA into DNA

fragments
IV. X-ray film is processed to show the positions of the positions of DNA bands

that form the DNA profile
V. Different sizes of DNA are separated by fgel electrophoresis

A. III, V, I, II, IV
B. II, V, I, IV, III
C. V, II, IV, I, III
D. II, III, V, I, IV

10. Which organism has the similar function to pesticide?

A. Bacillus thuringiensis
B. Alcanivorax borkumensis
C. Rhizobium sp.
D. Arabidopsis sp

STRUCTURE QUESTIONS ( 7 MARKS)

1. What is the meaning of genetic engineering?
_______________________________________________________________
[1mark]

2. State two characteristics of genetically modified foods (GMF).
i. _______________________________________________________________
_______________________________________________________________
ii. _______________________________________________________________
_______________________________________________________________

[2marks]

3. How does genetic engineering technology help in increasing the production of
potato yield in cold areas?

________________________________________________________________
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[2marks]

ESSAY QUESTIONS (10 MARKS)
1. Insulin hormone plays important role in regulating glucose level in blood.

(a) Explain the methods in producing insulin using genetic engineering technique.

(b) (i) What is gene therapy? [6marks]
(ii) State basic steps in gene therapy. [1marks]
[3marks]

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