Coelenterata Ctenophora - Questions & Answers | Exam2Win

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31. Which pair of cells is present in epidermis of Hydra but not in its endoderm?

A. Stinging cells and interstitial cells

B. Gland cells and germ cells

C. Stinging cells and germ cells

D. Stinging cells and gland cells

Explanation:

32. Jelly Fishes belong to class

A. Hydrozoa

B. Scyphozoa

C. Anthozoa

D. None of the above

Explanation:

33. Nematocysts are activated by

A. Water

B. Touch

C. Brain

D. None of the above

Explanation:

34. Common between trichocysts of Paramecium and nematocysts of Hydra is

A. Attachment and defence

B. Defence only

C. Sensitivity

D. Food capturing

Explanation:

35. Digestion in Hydra is

A. Intercellular

B. Intracellular

C. Both

D. None

Explanation: