Animal Kingdom Question 139

139. What is common in Whale, Bat and Rat?

[1993]

(a) Absence of neck

(b) Muscular diaphragm between thorax and abdomen

(c) Extra-abdominal testes to avoid high temperature of body

(d) Presence of external ears

Show Answer

Answer : b

Hints & Solutions

(b) Diaphragm is present in mammals as a muscular seperator between thorax and abdominal region.