19. Answer in detail II

 

a. Animals rely on plants for food and shelter TrueFalse.

 

b. Silk is produced by silkworms, which feed on mulberry leaves when they spin their cocoonFalseTrue .

 

c. The relationship between the silkworm and the plant is economically not useful for producing silk TrueFalse.

 

d. The bright colour of the flowers, the smell and honey attract insects FalseTrue.

 

e. When insects move from one plant to another, the pollen grains from their body gets transferred to the other flower, which results in self-pollination TrueFalse.

 

f. Bees are the best pollinators that produce honey FalseTrue.

 

g. Plants and algae that do not live in coral reefs provide food for a variety of fish FalseTrue.

 

h. Animals and birds, play an important role in spreading seeds of various plants TrueFalse.

 

i. The digestive enzymes of birds harden the seed's protective layer, allowing it to germinate FalseTrue.

 

j. Ecology is the science that deals with the inter-relationship between plants, animals and the environment TrueFalse.