A mollusc and an annelid both show trochophore larvae in many species, but their adult body plans are very different. In an exam answer, the key reason is: (228)
Correct Answer: A. trochophore larva as a developmental link
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A flatworm and a roundworm are placed side by side. The roundworm is recognized by a cylindrical body, complete gut, and pseudocoelom. In an exam answer, the key reason is: (227)
Correct Answer: C. cylindrical body with pseudocoelom and complete gut
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. In an exam answer, the key reason is: (226)
Correct Answer: B. cellular-level organization with choanocytes
In a viva, the examiner says: a sea star and a chordate are discussed together in a phylogeny lecture even though one is an invertebrate. The expected answer is: (225)
Correct Answer: B. deuterostome development
In a viva, the examiner says: an arthropod and a nematode are grouped together in modern discussions because both shed an outer cuticle during growth. The expected answer is: (224)
Correct Answer: D. ecdysis of a cuticle
In a viva, the examiner says: a mollusc and an annelid both show trochophore larvae in many species, but their adult body plans are very different. The expected answer is: (223)
Correct Answer: B. trochophore larva as a developmental link
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: (222)
Correct Answer: D. cylindrical body with pseudocoelom and complete gut
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: (221)
Correct Answer: A. cellular-level organization with choanocytes
A student wants to avoid rote memorization. After reading that a sea star and a chordate are discussed together in a phylogeny lecture even though one is an invertebrate., the correct concept is: (220)
Correct Answer: A. deuterostome development
A student wants to avoid rote memorization. After reading that an arthropod and a nematode are grouped together in modern discussions because both shed an outer cuticle during growth., the correct concept is: (219)
Correct Answer: C. ecdysis of a cuticle
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: (218)
Correct Answer: D. trochophore larva as a developmental link
A student wants to avoid rote memorization. After reading that a flatworm and a roundworm are placed side by side. the roundworm is recognized by a cylindrical body, complete gut, and pseudocoelom., the correct concept is: (217)
Correct Answer: D. cylindrical body with pseudocoelom and complete gut