Question

(a) Name the parts labelled as A, B, C and D in the diagram given below:
(b) What is pollination? State its significance.
(c) How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.

Answer 1

Explanation:

after pollination Pollen Grain drop to carpel is known as and form sheets

Answer 2

(A) Name the parts:

The image in the question is attached below.

A = Pollen grain

B = Pollen tube

C = Ovary

D = Female germ cell

(B) Pollination:

It is a process of transfer of pollen grains from to stigma in carpel from anther in stamen. There are two types of pollination:

• Self pollination (same plant pollination)
• Cross pollination (different plant pollination)

Significance:

• It is widely helpful in plant reproduction.
• It cause variation in the plant species as pollen grains of some plants may fertilise with other plants.

(c) Fertilisation process:

When the pollen grains are dropped into the stigma. The pollen grain (male gamete) travels towards female gamete through pollen tube. The male and female fertilise to form zygote. It is developed into new plant. This process is called fertilisation.

(i) Seed: It is developed from ovary.

(ii) Fruit: It is developed from eggs of the ovule.