71. In which of the following vertebrate group/groups, the heart does not pump oxygenated blood to different parts of the body? (a) Pisces and amphibians (b) amphibians and reptiles (c) amphibians only (d) Pisces only Answer
Explanation: In Pisces, the heart does not pump oxygenated blood to different parts of the body. This is because Pisces have a two-chambered heart. Since both the auricle and ventricle remain undivided, only deoxygenated blood passes through it.
