Question

During germination, micropyle of seed takes part in
A. Forming weak point for emergence of radical
B. Absorption of water
C. Passage of gases
D. Leaching inhibitors

Answer 1

Hint: Germination is a process by which a seed or spore gets developed into a new plant. The term germination is applied to the sprouting of a seedling from a seed of the angiosperm or gymnosperm, the growth of sporeling from a spore such as spores of fungi, growth of pollen tube from pollen grains, etc.

Complete Answer:
Micropyle of seed: Micropyle is a minute opening which is present in the integument of an ovule of a seed plant.
- Through this opening, the pollen tube enters into the ovule which consists of the male gametes.
- The micropyle of the seed helps in the absorption of the water and makes this absorbed water available for the growing embryo for germination.
- Micropyle results from the incomplete covering of nucellus by the integument.
- Micropyle remains as an opening in the testa of most of the seeds.

Additional information:
- Micropyle is also present in the female gamete of some animals.
- Micropyle is a pore which is present on the membrane covering the ovum through which a sperm can enter.
- Through this opening, the sperm enters into the ovum in order to facilitate fertilization.
Therefore it has been clear from the above discussion that during germination, the micropyle of seed takes part in absorption of water.

Hence, option B is the correct answer for this question.

Note: Seed is composed of a small embryonic plant which is enclosed in a protective outer covering. The seed is formed by the process of sexual reproduction (process of formation of new ones) in plants. Seeds are the products of ripened ovules after fertilization. Seeds are the fundamental means of reproduction.