Question

The number (X) of chromosomes in the endosperm of the angiospermic plant is

• A. 1X
• B. 2X
• C. 3X
• D. 4X

Hint:

In angiosperms, the endosperm is triploid (3X), formed by double fertilization, which is a unique feature of flowering plants.

Answer 1

The Correct Option is C

Step 1: Understanding endosperm formation.
In angiosperms, the process of double fertilization occurs. One male gamete fuses with the egg cell to form the zygote (2X), while the other male gamete fuses with the two polar nuclei in the central cell of the embryo sac.

Step 2: Chromosome contribution.
- Each polar nucleus contributes 1X, making a total of 2X.
- The male gamete contributes 1X.
Therefore, the endosperm has 3X chromosomes.

Step 3: Conclusion.
The correct answer is (C) 3X, as the endosperm of angiosperms is typically triploid.