Question

In the figure given above, where do pollination and fertilization take place?

• A. I and II only
• B. I and III only
• C. I and IV only
• D. I, II and III only

Answer 1

The correct option is C I and IV only

I- Stigma

II-Anther

III-Petal

IV-Ovary

Step 1: Pollination
In general, male gametes are contained in pollen, which is carried by wind, water, or wildlife (both insects and animals) to reach female gametes. The pollen is deposited on a plant's stigma, which is part of the pistil (the elongated part of a flower extending from the ovary). This process is called pollination.

Step 2: Germination
Within a few minutes, pollen tubes begin growing, or germinating, toward the egg cell. These tubes will provide a path for the sperm carried in the pollen to reach the egg.

Step 3: Penetration of the Ovule
The pollen tubes penetrate the ovule, which contains the female gametes.

Step 4: Fertilization
Sperm travel down the pollen tubes and fertilize an egg. Most angiosperms undergo double fertilization, where both an egg and the polar nuclei in the embryonic sac are fertilized.

So, the correct answer is 'I and IV only'.