Biology - Activity 6.7 (pg 126)

ACTIVITY 6.7

Simple fruit

Accessories Types Aggregate
fruit of fruit fruit

Multiple
fruit

Simple fruit
• Result of the ripening-to-fruit of a simple or compound ovary in a single flower with

a single pistil.

Aggregate fruit
• Develops from a single flower that presents numerous simple pistils.

Multiple fruit
• Formed from a cluster of flowers —also called an inflorescence.
• Each ('smallish') flower produces a single fruitlet, which, as all develop, all merge into

one mass of fruit.

Accessory fruit
• For some fruits, some (or all) of the edible parts do not issue from the ovary; such fruit

development can comprise all the pistils and other parts produced from one flower as
well as all those produced from many flowers.
• Occurs among all three classes of fruit development —simple, aggregate, and multiple

i) Simple fruit

Types of Simple Fruit The fruit develops from Simple fruits are either
a single carpels fused fleshy or dry: Fleshy
fruits are those fruits in
together in a single which part or all of the
flower. pericarp is fleshy at

maturity

Flesh Dry Ex: Orange and Peas
y • Fibrous drupe

• Berry – ex: coconut,
-ex: strawberry, walnut
• Follicle fruit
blueberry, raspberry
• Drupe (stone - ex: magnolia,
peony
fruit) • Nut
- ex: apricot, cherry,
olive, peach, plum, - ex: hazelnut,
acorn
mango
• Pome

- ex: apples,
pears

Examples of fleshy and dry fruit in Simple Fruit Dry fruit

Fleshy fruit

Berry Drupe Fibrous drupe Follicle fruit
(assorted berries) (apricot) (coconut) (Magnolia)

Pome Nut
(apples) (acorn)

ii) Aggregate fruit

Different types of aggregate fruits can produce different
etaerios, such as:

Achenes The fruit develops from Which simply means an
numerous carpels in a single aggregate fruit or etaerio is a
fruit that develops from the
flower
merger of several ovaries
that were separated in a

single flower.

Drupelets

Ex: Blueberries

Follicles

Berries

iii) Multiple fruit

The fruit develops from Each flower in the
carpels of a cluster of inflorescence produces a

flowers. fruit, but these mature
into a single mass in
which each flower has
produced a true fruit.

After flowering the mass Ex: Mulberries
is called an

infructescence.

iv) Accessories fruit

The fruit develops from a They incorporate other
tissues that is not in the flower parts in the
development of the
ovary but from some mature fruit
tissues near the carpel.

For example, the Ex: Pear, fig and
hypanthium is used in strawberry
forming the pear (Pyrus;
Different types of figs
Rosaceae), and the
receptacle becomes part

of the prickly pear.

Table of fleshy fruit examples

Type Examples
Simple fleshy fruit True berry, Stone fruit, Pome
Boysenberry, Lilium, Magnolia, Raspberry,
Aggregate fruit
Blackberry, Strawberry

Multiple fruit Fig, Osage orange, Mulberry, Pineapple

Accessory fruit Apple, Stone fruit, Pineapple, Blackberry,
Strawberry

a) The number of fruits in each stalk

Simple fruit
• 3 peas per pod
Aggregate fruit
• Average around 5-7 pints
Multiple fruit
• 5-6
Accessories fruit
• 2-3

b) The size of the fruit

Simple fruit
• about 3.5 millimetres (0.14 in) to 5.5 millimetres (0.22 in)
Aggregate fruit
• approximately about 3/4 inch in diameter.
Multiple fruit
• 2-3 cm
Accessories fruit
• 18 cm (7 in) long and 8 cm (3 in)

c) The number of flowers that form it

Simple fruit
• one pistil (of a single flower).

Aggregate fruit
• one flower that has more than one ovary (more than one pistil)

Multiple fruit
• many flowers growing in a cluster or that are fused together

into a larger fruit

Accessories fruit
• some other part of the flower in addition to that which is

derived from the ovary

Source of reference

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