Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

(a) What is the importance of cross pollination?
(b) Explain how a seed is formed after an ovule is fertilized.

Answer Text:
a)- Mixing of genetic materials hence a source of variation/ hybrid.
b)- Diploid zygote undergo mitosis to develop into an embryo which differentiate into plumule, radicle and one or two cotyledons.
Primary endosperm nucleus develops into endosperm, integument develops into seed/ testa coat thereby bringing a great reduction in water
level and this causes dormancy.