Kingdom Animalia Metazoa - Questions & Answers | Exam2Win

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51. Which is correct in sponges

A. Single mouth innumerable exits

B. Single exit innumerable mouths

C. A true coelom

D. Radial symmetry

Explanation:

52. Mesogloea of sponges consists of

A. Gelatinous matrix

B. Fibres

C. Spicules

D. All the above

Explanation:

53. Skeleton of sponge is

A. Ectodermal

B. Endodermal

C. Exoskeleton

D. Endoskeleton

Explanation:

54. A sponge that contains a sieve plate in the region of its osculum is

A. Hyalonena

B. Spongia

C. Euplectella

D. Cliona

Explanation:

55. Sponges belonging to calcarea occur in

A. Fresh water

B. Shallow sea water

C. Deep sea water

D. Some marine, other fresh water

Explanation: