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BS Zoology Semester ExamAnimal Diversity-I (Invertebrates)PakistanHard

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
BS Zoology Semester ExamAnimal Diversity-I (Invertebrates)PakistanMedium

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
BS Zoology Semester ExamAnimal Diversity-I (Invertebrates)PakistanMedium

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
BS Zoology Semester ExamAnimal Diversity-I (Invertebrates)PakistanMedium

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: (282)

A. dorsoventrally flattened acoelomate body B. radial body with cnidocytes C. cylindrical body with pseudocoelom and complete gut D. segmented body with setae
Correct Answer: C. cylindrical body with pseudocoelom and complete gut
BS Zoology Semester ExamAnimal Diversity-I (Invertebrates)PakistanMedium

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: (281)

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