(i) The fish provide nutritive food. (ll) Many insects help in pollination of crops and fruit trees and exert biological control on such insects, which are harmful.
(i) The fish provide nutritive food.
(ll) Many insects help in pollination of crops and fruit trees and exert biological control on such insects, which are harmful.
Name four Chordata classes having cold blooded animals.
Chondrichthyes, Osteichthyes, Amphibia and Reptilia.
Chondrichthyes, Osteichthyes, Amphibia and Reptilia.
See lessHow many chambers are present in the heart of: (i) Fishes; (ii) Frog?
(a) Two; (b) Three.
(a) Two; (b) Three.
See lessState any one step taken by the government to protect the flora and fauna.
Fourteen biosphere reserves have been set up in the country to protect flora and fauna.
Fourteen biosphere reserves have been set up in the country to protect flora and
See lessfauna.
What causes the disturbance in the ecosystem?
(l) Hunting by greedy hunters for commercial purposes. (ii) Pollution due to chemical and industrial waste and reckless cutting of the forests.
(l) Hunting by greedy hunters for commercial purposes.
See less(ii) Pollution due to chemical and industrial waste and reckless cutting of the forests.
State two advantages of animals.
(i) The fish provide nutritive food. (ll) Many insects help in pollination of crops and fruit trees and exert biological control on such insects, which are harmful.
(i) The fish provide nutritive food.
See less(ll) Many insects help in pollination of crops and fruit trees and exert biological control on such insects, which are harmful.