Question

In flowering plants, the process of double fertilization results in the formation of which two structures?

• A. Embryo and endosperm
• B. Embryo and seed coat
• C. Endosperm and pollen grain
• D. Seed coat and ovule

Hint:

In double fertilization, remember that one fertilization produces the embryo (zygote), and the other produces the endosperm (triploid). This distinguishes angiosperms from other plants.

Answer 1

The Correct Option is A

Double fertilization is a unique feature of flowering plants (angiosperms). During this process, two male gametes from a pollen tube fertilize two cells within the ovule:
- One male gamete fuses with the egg cell to form a diploid zygote, which develops into the embryo.
- The other male gamete fuses with two polar nuclei in the central cell to form a triploid primary endosperm nucleus, which develops into the endosperm, a nutritive tissue that provides nourishment to the developing embryo.
The other options are incorrect:
- Seed coat: Develops from the integuments of the ovule, not from double fertilization.
- Pollen grain: Produces male gametes but is not a product of fertilization.
- Ovule: The structure that contains the egg and develops into the seed after fertilization, not a direct product.
Thus, double fertilization results in the formation of the embryo and endosperm.