Which one of the following is the true description about

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

Cockroach belongs to phylumArthropoda. It has 10 pairs of Spiracles (2 pairs on thorax and 8 pairs on abdomen).