Read the following four statements (I-IV): I. In birds, the skin is dry without any glands except the preen glands which are modified sudorific glands. II. All mammals exclusively respire by using lungs, except dolphins. III. Chameleon is a tree lizard with a prehensile tail and independently movable eyes. IV. Amphibia is the only tetrapod vertebrate which has external fertilisation with no larval stage in their life