Exercise

In a flower of Pisum, each micro sporangium consists of 10 microspore mother cells. How many pollen grains are formed from one flower?

Assertion: The endosperm of angiosperms is generally triploid.
Reason: In Angiosperms, endosperm develops from primary endosperm nucleus which in turn formed by fusion of haploid male gamete and diploid secondary nucleus.

The gamete mother cell of rice have 24 chromosomes. How many chromosomes are present in its endosperm?

Assertion: In coconut, the water represents the free nuclear endosperm and the white kernel represents the cellular endosperm.
Reason: PEN undergoes a number of free nuclear divisions which are all followed by wall formation.

If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be

Identify the different parts of a typical dicot embryo labelled as A, B and C and select the correct option.

Identify A and B in the L.S. of an embryo of grass given below.

Assertion: In plants, apomixis is a type of asexual reproduction that mimics sexual reproduction.
Reason: In apomixis, seeds are produced without the fusion of gametes.