Which one of the following is the true description about an animal concerned?
Which one of the following is the true description about an animal concerned?
Cockroach - 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
Earthworm - The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
Frog - Body divisible into three regions - head, neck and trunk
Rat - Left kidney is slightly higher in position than the right one
Solution
In rat right kidney is sligtly higher than left because all the organs are concentrated towards left, only in human beings left kidney is higher. In earthworm the correct sequence of alimentary canal is pharynx, oesophagus, gizzard, stomach and intestine. In Frog, neck is absent.