For a concept-based MCQ, read this case: a sea star and a chordate are discussed together in a phylogeny lecture even though one is an invertebrate. Select the strongest explanation. (240)
Correct Answer: D. deuterostome development
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For a concept-based MCQ, read this case: an arthropod and a nematode are grouped together in modern discussions because both shed an outer cuticle during growth. Select the strongest explanation. (239)
Correct Answer: B. ecdysis of a cuticle
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. (238)
Correct Answer: C. trochophore larva as a developmental link
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. (237)
Correct Answer: B. cylindrical body with pseudocoelom and complete gut
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. (236)
Correct Answer: C. cellular-level organization with choanocytes
A teacher gives this comparison: a sea star and a chordate are discussed together in a phylogeny lecture even though one is an invertebrate. The point being tested is: (235)
Correct Answer: B. deuterostome development
A teacher gives this comparison: an arthropod and a nematode are grouped together in modern discussions because both shed an outer cuticle during growth. The point being tested is: (234)
Correct Answer: A. ecdysis of a cuticle
A teacher gives this comparison: a mollusc and an annelid both show trochophore larvae in many species, but their adult body plans are very different. The point being tested is: (233)
Correct Answer: D. 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: (232)
Correct Answer: D. cylindrical body with pseudocoelom and complete gut
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: (231)
Correct Answer: A. cellular-level organization with choanocytes
A sea star and a chordate are discussed together in a phylogeny lecture even though one is an invertebrate. In an exam answer, the key reason is: (230)
Correct Answer: B. deuterostome development
An arthropod and a nematode are grouped together in modern discussions because both shed an outer cuticle during growth. In an exam answer, the key reason is: (229)
Correct Answer: A. ecdysis of a cuticle