Question

1.Why are ferns not well adapted to desert areas?

2. Explain how bryophytes are an intermediate between green algae and terrestrial plants.

3.Angiosperms produce pollen in_____

Answer 1

Q.1

Ferns have limited vascular elements and are not very effective at transporting water. Most of the ferns has not a cuticles to prevent drying under low humidity .Fery required liquid water to transport the sperm.

Ferns are very successful niche plants: they are well adapted to particular environmental niches - soil moisture, humidity, light, etc.

Q.2

The most primitive land plants are bryophytes, living in intermediate of aquatic and terrestrial environment. Bryophytes are considered to be evolved from algae. Cell walls of both algae and bryophytes are made up of cellulose. Both algae and bryophytes lack a vascular system.

The main difference between algae and bryophytes is the division of the plant body:-

No division of labour is observed in the plant body of algae whereas the plant body of bryophytes internally divides into photosynthetic and storage zones.

Q.3 Produce pollen in Flower

Angiospermsproduce their reproductive organs (the pollen and ovule-bearing organs) within a flower.

Angiosperms have male sex organs called stamens. On the end of the stamen is the anther.