Question

Gavialis is characterised by
A. Prolonged snout
B. Green upper surface
C. Pot-like anterior enlargement of snout in males
D. All of the above

Answer 1

Hint: The reptiles are vertebrate animals that covered organisms like crocodiles, lizards, gharial, etc. they are oviparous and found in aquatic and tertiary organisms.

Complete Answer:
- Reptiles are the vertebrate animals that are four legged, they lay eggs, the skin of reptiles is covered with scales, cold blooded animals, and the reptiles breathe with the gills.
- Now, Gavialis is also commonly known as Gharial. They are one of the largest crocodiles found in the salt water. They have thick skin that is covered with scales and are not overlap. They have bony plates called Osteoderms on the dorsal side that serve as armor. They are olive colour with darker bands along with the tail and back.
- They consist of long and narrow snouts that are longer than the snout of other crocodilians. They have sharp slender teeth along the snout; upper teeth interlock with lower. Thecodont teeth are set in the sockets like the other reptiles. They have compressed tails, weak legs, back feet are webbed, and can’t lift body up off the ground.
- So the Gavialis have integumentary sense organs, tiny pits present on the scales of the entire body including the jaw and the head, the eyes of the tapetum lucidum enables night vision, the nictitating membrane present in the transparent membrane that found across the eye that protect them under the water, and the ears consists of ear canal that prevent entering from the water and hear mostly low frequency.

Hence the correct answer is option D.

Note: Unlike the other reptiles Gavials also live in both water and land. They respire with the help of gills. They lay eggs and are very dangerous. They have very strong teeth that are useful for grabbing prey.