Question

Find the odd one out in each group and give reasons for your choice.

• A. Pollen
• B. Ovule
• C. Anther
• D. Filament

Answer 1

The correct option is B

Ovule

The correct option is B:
Explanation for the correct option:

1. Gynoecium is the female reproductive part of the flower.
2. The structural and functional unit carpel is divided into three parts: stigma, style, and ovary.
3. At the base of the carpel there is a swollen part known as the ovary.
4. The ovary provides a home to small, round egg-like structures called ovules.
5. Ovules on the other hand are home to the female gametes.

Explanation for incorrect options:
Option A:
The pollen grain is produced in the anther of the stamen.

Option C:
The anther is a bilobed structure of the stamen that stores fine particles known as pollen grains. Male gametes are present inside pollen grains.

Option D:
Filaments are thin, long, and narrow stalks of the stamen.

Final answer: Ovule is a part of the ovary which is a part of the carpel, and forms the female reproductive part known as gynoecium.