Question

Fertilization is essential for the production of seed, but in some angiosperms seeds develop without fertilization.
(a)Give an example of an angiosperm that produces seeds without fertilization. Name the progress.
(b)Explain the two way by which seeds develop without fertilization.

Answer 1

(a)Example, the members of Asteraceae like sunflower. The process is called apomixis.
(b)(i)A diploid egg cell is formed without meiosis and it develops without fertilization into an embryo in some cases.
(ii)In some cases, some of the cells of nucellus around the embryo sac develop into embryo.
For example-mango and citrus