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Grade: upto college level
        One very special feature in the earthworm pheretima is that

1. It has a long dorsal tubular heart
2. Fertilisation of eggs occurs inside the body
3. The typhlosole greatly increases the effective absorption area of the digested food
in the intestine
4. The S-shaped setae embedded in the integument are the defensive weapons used
against the enemies
5 years ago

Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
							Sol:         In earthworm, mid dorsal villi typhlosole greatly increases the effective absorption area
            of the digested food in the intestine
            Answer: (3)

						
5 years ago
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