Which one of the following is the true description about an animal concerned

Options

A. Rat – Left kidney is slightly higher in position than the right one
B. Cockroach – 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
C. Earthworm – The alimentary canal consists of a sequence of pharynx, oesophagus, stomach gizzard and intestine
D. Frog – Body divisible into three regions – head, neck and trunk

Answer

B

Explanation

The main tracheal trunk open to the exterior on body surface through 10 pairs of segmentally arranged apertures termed as spiracles. There are 8 pairs of spiracles present in abdomen and 2 pairs in thorax.