State two characteristic features of amphibians

(i) State two characteristic features of amphibians.
(ii) Identify the following organisms.
(a) Cold- blooded animals that lay eggs that they use for moving around, in water and have three-chambered heart
(b) Spiny skinned organism which have a peculiar water-drivern tube system
© Organisms which have an open circulatory system having blood-filled coelomic cavity.

(i)Characteristic features of amphibians are:
(a) Respiration either through gills or lungs.
(b) Skin with mucus glands.
(ii)(a) Reptiles
(b) Echinoderms
© Arthropods