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41.

Earthworms are:

A.	Vectors	B.	Parasites
C.	Free living	D.	Commensals

42.

Leeches are:

A.	Ectoparasites	B.	Commesals
C.	Endoparasites	D.	None of these

43.

Leeches have suckers at:

A.	Anterior end only	B.	Posterior end only
C.	Anterior and posterior both ends	D.	None of these

44.

Leeches feed upon:

A.	Soil	B.	Blood from man and attles
C.	Flesh	D.	None of these

45.

Earthworms live:

A.	In the soil	B.	In the water
C.	As ectoparasites	D.	As endoparasites

46.

Earthworms are beneficial for human begins because:

A.	They provide food	B.	They increase in fertility of soil
C.	They kill bacteria	D.	They kill insects

47.

Earthworms increase fertility of soil by:

A.	Killing bacteria	B.	Adding nitrogenous wastes
C.	Turning over the soil	D.	By burrowing

48.

Excretory organs in earthworm are:

A.	Nephridia	B.	Body wall
C.	Flame cells	D.	None of these

49.

Generic name pheretima was given by:

A.	Linnaeus	B.	Sutton
C.	Lamarck	D.	Kinberg

50.

Pheretima belongs to class:

A.	Oligochaeta	B.	Polychaeta
C.	Hirudinea	D.	None of these