Q. Which of the following statements are true/false? I.In torpedo, the electric organs are capable of generating strong electric shock to paralyze the prey II.Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming III.Amphibian skin is moist and has thick scales IV.Birds are poikilothermous animals V.The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished
A) I, II and III are true; IV, V are false
B) I, II and V and true; III and IV are false
C) I, II and III are false; IV and V are true
D) I, II and IV are false; III, and V are true
Explanation
Skin in amphibians is naked, i.e., scales are absent. Glands are present, which keeps it moist. It functions in respiration besides protection. Birds (Aves) are warm blooded or homiothermic or endothermal tetrapods as the temperature of the body remain constant as compared to that of surrounding. While, amphibians and reptiles are cold blooded or poikilothermal or ectothermal tetrapods as the temperature of the body varies according to the surrounding.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.