Question

Which fruit has seeds outside it?
(a) Orange
(b) Mango
(c) Strawberry
(d) Cherry

Answer 1

Hint The fruits mainly consist of two parts- pericarp and seed. The pericarp is present as the outside covering of the seed. pericarp is again divided into three types- outermost layer exocarp, middle layer mesocarp and innermost layer surrounded by seed as endocarp. Seed consists of seed coat, embryo and the endosperm.

Complete answer
Before proceeding to the answer, we should understand the different types of fruits. There are mainly five types of fruits. These are-
-Simple fruits: These types of fruits are produced from a single ovary. They contain one or many small seeds. Examples include mangoes, apples etc.
-Drupe fruits: Drupe fruits contain only one seed and an outside mesocarp which is fleshy. Examples include peaches.
-Aggregate fruits: These fruits are formed by the aggregation of many ovaries in the same flower. Examples include raspberries.
-Multiple fruits: These fruits are formed by the aggregation of more than one ovary but from different flowers. Examples include pineapples.
-Accessory fruits: These fruits are formed from the accessory parts of the flowers. Examples include strawberries. It is the only fruit which is developed from the accessory part of the flower.
The seeds outside the strawberry are actually not a seed. They are the ovaries or fruits and called achenes. Each ovary inturn consists of a seed. The red, ripe part that we consider as a fruit is actually a swollen receptacle. When a strawberry flower is pollinated, the receptacle tissue grows and changes.

Thus the answer of the above question is (C) strawberry. It is the only fruit in which seeds are present outside. However, they are not seeds.

Note: Pollination is the transfer of stamens from the anther of male plant or flower to the stigma of a pistil of female flower or plant. After pollination, the ovary of the flower slowly changes into fruit and ovules change into seeds.