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Observe the specimen of earthworm and draw the diagram. Write its characters you have observed. 

Observations :

a) Touch the skin of the earthworm and say how do you feel?

b) What is the colour?

c) Are there any differences you observed in its body colour and among the body parts?

d) How does it move?

e) Are there any ring like structures seen in its body?

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1. The body of earthworm is bilaterally symmetrical and extensively segmented. 

2. The anterior end is tapering while posterior end is more less blunt.

a) The skin of earthworm is moist.

b) The colour of earthworm is dark brown in colour.

c) The dorsal surface is darker than the ventral surface.

d) Earthworm moves by alternate contractions of circular and longitudinal muscles.

e) Ring like segments are present in earthworm.

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