Animal KingdomHard
Question
Which one of the following is the true description about an animal concerned ?
Options
A.Eartheorm - The alimentary canal consists oesophagus, stomach, gizzard and intestine
B.Frog - Body divisible into three frgions head, neck and tunk
C.Rat - Left kidney is slightly higher in position than the right one
D.Cockroach - 10 pais of spiracles (2 pairs on thorax and 8 pairs on abdomen)
Solution
The respiratory system of cockroach consists of trachesae, tracheoles and spiracles. The main tracheal trunks open to exterior on body surface through 10 pairs of segmentally arranged spiracles. Two pair of spiracles are thoracic (onebrtween pro and mespthorax and other be tween meso and meso metathorax). Eight pairs of spiracle are abdominal (one pair in each of the first eight abdominal segments).
Alimentary canal of earthworm is complete and functionally regioned into buccal chamber, pharynx, oesophagus, gizzard, stomach and intestine,
Frog′s body has two main parts, ie, head and trunk. Absence of neck and tail provide convenience in both hoppin g and swimming.
Alimentary canal of earthworm is complete and functionally regioned into buccal chamber, pharynx, oesophagus, gizzard, stomach and intestine,
Frog′s body has two main parts, ie, head and trunk. Absence of neck and tail provide convenience in both hoppin g and swimming.
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