MCQ Collection

Animal Diversity-I (Invertebrates) MCQs

Practice Animal Diversity-I (Invertebrates) questions with answers and explanations.

A teacher gives this comparison: a sponge and a cnidarian are compared in class. the sponge differs most clearly because it has cellular-level organization and choanocyte-based filter feeding. The point being tested is: (256)

A. jointed appendages and exoskeleton B. cnidocytes and gastrovascular cavity C. radula and mantle cavity D. cellular-level organization with choanocytes
Correct Answer: D. cellular-level organization with choanocytes

In a viva, the examiner says: a flatworm and a roundworm are placed side by side. the roundworm is recognized by a cylindrical body, complete gut, and pseudocoelom. The expected answer is: (272)

A. radial body with cnidocytes B. segmented body with setae C. cylindrical body with pseudocoelom and complete gut D. dorsoventrally flattened acoelomate body
Correct Answer: C. cylindrical body with pseudocoelom and complete gut

For a concept-based MCQ, read this case: a mollusc and an annelid both show trochophore larvae in many species, but their adult body plans are very different. Select the strongest explanation. (288)

A. trochophore larva as a developmental link B. jointed appendages as a shared adult trait C. cnidocytes as a shared adult trait D. tube feet as a shared adult trait
Correct Answer: A. trochophore larva as a developmental link

A teacher gives this comparison: a flatworm and a roundworm are placed side by side. the roundworm is recognized by a cylindrical body, complete gut, and pseudocoelom. The point being tested is: (257)

A. cylindrical body with pseudocoelom and complete gut B. segmented body with setae C. radial body with cnidocytes D. dorsoventrally flattened acoelomate body
Correct Answer: A. cylindrical body with pseudocoelom and complete gut