Exchange of gases on fishes occurs through gills. True of false?

Q. In earthworm, the exchange of gases occurs through the moist skin. In fishes it takes place through gills and in insects through the tracheae.

Q. In insects the exchange of gases takes place through _______________.
(a) spiracles
(b) gills
(c) lungs
(d) lenticels

Q. The exchange of gases in roots take place through ________________.
(a) stomata
(b) gills
(c) general surface
(d) spiracles

Q. State whether the following statements are true or false :

(c) Fish and earthworm exchange gases during respiration in the same way.

Q. Exchange of gases in lungs occurs through