MCQ Collection

Animal Diversity-I (Invertebrates) MCQs

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

A student wants to avoid rote memorization. After reading that a mollusc and an annelid both show trochophore larvae in many species, but their adult body plans are very different., the correct concept is: (268)

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

For a concept-based MCQ, read this case: 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. Select the strongest explanation. (286)

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

In a viva, the examiner says: 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 expected answer is: (271)

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

For a concept-based MCQ, read this case: a flatworm and a roundworm are placed side by side. the roundworm is recognized by a cylindrical body, complete gut, and pseudocoelom. Select the strongest explanation. (287)

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