Question

Identify the correct labellings in the figure of a fertilised embryo sac of an angiosperm given below: 

• A. A – zygote, B – degenerating synergids, C – degenerating antipodals, D – PEN
• B. A – degenerating synergids, B – zygote, C – PEN, D – degenerating antipodals
• C. A – degenerating antipodals, B – PEN, C – degenerating synergids, D – zygote
• D. A – degenerating synergids, B – zygote, C – degenerating antipodals, D – PEN

Hint:

In a fertilized embryo sac, the synergids and antipodal cells degenerate, while the zygote develops into the embryo and PEN forms the endosperm.

Answer 1

The Correct Option is B

In the fertilized embryo sac: A represents degenerating synergids as they are no longer needed post-fertilization. 
B is the zygote, formed after the fusion of male and female gametes.
C is the Primary Endosperm Nucleus (PEN), which divides to form the endosperm, a nutritive tissue. 
D shows degenerating antipodal cells that play no role after fertilization.