NEETBiologyStructural Organisation in AnimalsMCQ+4 / −1
One very special feature in the earthworm
pheretima is that :
- AThe S-shaped state embedded in the integument are the defensive weapons used against the enemies
- BIt has a long dorsal tubular heart
- CThe typhlosole greatly increases the effective absorption area of the digested food in the intestine
- DFertilisation of eggs occurs inside the body
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Correct answer: C
The intestine of an earthworm has a peculiar fold of tissue that forms a pocket in the intestine that is visible when viewing a cross section. This space, which runs almost the whole length of the body dorsally is known as the typhlosole and it serves to increase the surface area of the intestine for absorption.
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