#1 Warm-blooded animals are those which are able to keep their body temperature :-
Warm–blooded creatures, like mammals and birds, try to keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment.
#2 Which is the largest organ in human beings?
The largest internal organ (by mass) is the liver, with an average of 1.6 kilograms (3.5 pounds). The largest external organ, which is also the largest organ in general, is the skin. The longest muscle is the sartorius muscle in the thigh.
#3 Of the following which one is not a fish ?
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars.
#4 Smallest man-like ape is :
The Gibbons are the smallest, slenderest, and longest-limbed of the man–like apes: their arms are longer in proportion to their bodies than those of any of the other man–like Apes, so that they can touch the ground when erect; their hands are longer than their feet, and they are the only Anthropoids which possess
#5 Nilgai belongs to the following family:
Nilgai, (Boselaphus tragocamelus), also called bluebuck, the largest Asian antelope (family Bovidae). The nilgai is indigenous to the Indian subcontinent, and Hindus accord it the same sacred status as cattle (both belong to the subfamily Bovinae).