(a) Copy the diagram, and label antipodals and synergids.

Question

Observe the diagram given below.

(a) Copy the diagram, and label antipodals and synergids.

(b) Explain double fertilization.

Answer 1

(a). 

2. At first, one of the male gametes fuses with egg cell to form a diploid zygote. This is called syngamy. The other male gamete fuses with the polar nuclei to form primary endosperm nucleus (PEN). This is called triple fusion. Thus, two types of fusion occur in the embryo sac called Double fertilization.