Question

i) Name the reproductive organs of
gymnosperms and angiosperms.
ii) Classify the following as dicot and
monocot.
Pea, onion, banana, maize
iii) Give reasons
(a) Nematodes have pseudocoelom.
(b) Bryophytes are called amphibians of
the plant kingdom.​

Answer 1

Answer:

i) Ovary

ii) Monocot -- Maize

Dicot -- pea

iii) a) The body cavity of nematodes is called a pseudocoelom because it is not fully lined by mesodermal cells as in the true coelomic cavity of all vertebrates.

b) Amphibians are those organisms which live on both land and in water. Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexual reproduction. The sperm of bryophyte (antherozoids) are flagellate and need water to swim to the eggs.