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71.

Larva of Hydra is called:

A.	Planula	B.	Amphiblastula
C.	Scyphistoma	D.	Miracidium

72.

Hydra reproduces asexually by budding when:

A.	It is alone	B.	Plenty of food is available in the pond
C.	Environmental conditions are unfavourable	D.	Populations of Hydra increases

73.

In the development of Hydra the gastrulation is the result of:

A.	Emboly	B.	Delamination
C.	Invagination	D.	Epiboly

74.

Gonads develop in Hydra from:

A.	Epithelimuscular cells	B.	Interstitial cells
C.	Gland cells	D.	Nematocysts

75.

The cells in Hydra which can transform into all other types of cells are:

A.	Gland cells	B.	Nutritive muscular cells
C.	Interstitial cells	D.	None of these

76.

Sexual reproduction in Hydra occurs during:

A.	Hot months	B.	Winter months
C.	Both (a) & (b)	D.	None of these

77.

Budding in Hydra occurs during:

A.	Warm months	B.	Winter months
C.	Both (a) & (b)	D.	None of these

78.

Anterior end of Hydra with mouth is called:

A.	Hytpostoma	B.	Pedal disc
C.	Both (a) & (b)	D.	None of these

79.

Nematocyst is stimulated to discharge by:

A.	Cnidocil	B.	Lesso
C.	Fibres of capsule	D.	None of these

80.

Which of these are not found in Hydra:

A.	Spirocyst	B.	Desmonemes
C.	Glutinants	D.	Stenotele