Differentiate between the following:
(a) Embryo sac and Endosperm
(b) Pollination and fertilization.

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Solution

a)
Embryo sac Endosperm
Ovule gives rise to and contains embryo sac.
It is formed from the primary endosperm nucleus.
It is a female gametophyte. It produces an egg cell for the purpose of fertilization.
It provides nutrition in the form of starch to the developing embryo.
b)
Pollination Fertilization
It is the transfer of pollen grains from the anther to the stigma of a flower.
It is the fusion of male gamete with female gamete
It leads to fertilization.
It results in the formation of seeds.
It is an external process. It is an internal process.

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Embryo sac	Endosperm
Ovule gives rise to and contains embryo sac.	It is formed from the primary endosperm nucleus.
It is a female gametophyte. It produces an egg cell for the purpose of fertilization.	It provides nutrition in the form of starch to the developing embryo.

Pollination	Fertilization
It is the transfer of pollen grains from the anther to the stigma of a flower.	It is the fusion of male gamete with female gamete
It leads to fertilization.	It results in the formation of seeds.
It is an external process.	It is an internal process.