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: (204)
Correct Answer: D. ecdysis of a cuticle
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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: (203)
Correct Answer: C. trochophore larva as a developmental link
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: (202)
Correct Answer: A. 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: (201)
Correct Answer: C. 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: (200)
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: (199)
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: (198)
Correct Answer: D. 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: (197)
Correct Answer: C. 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: (196)
Correct Answer: D. cellular-level organization with choanocytes
A lab observation notes that a course practical includes silkworm, citrus butterfly, parasites, and molluscs in one economic importance section. The observation points to:
Correct Answer: A. invertebrates can be useful, harmful, or both
In a specimen-based viva, the examiner describes this case: a health campaign reduces mosquito and sand fly breeding sites in an endemic area. Choose the concept that fits it best.
Correct Answer: A. vector control reduces many parasitic diseases
A student is revising Animal Diversity-I: a student compares a sponge, a jellyfish, a worm, a snail, a crab, and a sea star in the museum. What should the student write in the answer sheet?
Correct Answer: D. body form helps separate phyla during museum study