Q12 of 57 Page 75

What is double fertilization?

There are two male gametes. One male gamete fuses with the egg to form a zygote. This fusion between male and female gametes is known as fertilization. And the second male gamete fuses with secondary nucleus to form the endosperm nucleus. This process of fusion of male gamete with egg and secondary nucleus is known as double fertilization.

1st male gamete (n) + Egg(n) → Zygote (2n)


2nd male gamete (n) + Secondary nucleus (2n) → Endosperm nucleus (3n)


More from this chapter

All 57 →
10

Give suitable terms for the following methods of seed / fruit dispersal, with one example each: (i) by wind (ii) by water (iii) by animals.

 11

Give any two examples for each of the following cases where dispersal of fruits and seeds take place: (i) by birds (through excreta) (ii) by human beings

 13

What is triple fusion?

 14

a. Identify Fig. A and B.

b. Which part of A is modified into B.