In a specimen-based viva, the examiner describes this case: a crab exchanges gases using feathery structures associated with appendages under the carapace. Choose the concept that fits it best.
Correct Answer: A. gills
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All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
A student is revising Animal Diversity-I: a scorpion breathes through internal leaf-like respiratory structures. What should the student write in the answer sheet?
Correct Answer: A. book lungs
During a Zoology practical, a grasshopper delivers oxygen directly to tissues through branching air tubes. Select the most accurate identification.
Correct Answer: A. tracheal system
A crayfish removes wastes through excretory organs located near the bases of the antennae. The best answer is:
Correct Answer: D. green glands
A learner makes a note: a terrestrial insect conserves water while excreting nitrogenous wastes into the gut. The missing scientific idea is:
Correct Answer: D. malpighian tubules
In museum study, a fly detects movement through eyes made of many repeated visual units. The specimen or feature is best linked with:
Correct Answer: D. compound eyes
While comparing invertebrate groups, a prawn has biramous appendages and two pairs of sensory antennae. The feature being tested is:
Correct Answer: B. two pairs of antennae
A diagram in the course handout shows that a spider-like specimen lacks antennae and has eight walking legs. Identify the related structure or process.
Correct Answer: C. four pairs of legs
For semester exam preparation, consider this situation: a specimen has head, thorax, abdomen, one pair of antennae, and six legs. The correct conclusion is:
Correct Answer: D. three pairs of legs
A lab observation notes that in a grasshopper, hemolymph leaves vessels and bathes organs in body sinuses. The observation points to:
Correct Answer: C. open circulatory system
In a specimen-based viva, the examiner describes this case: segments of an insect are grouped into head, thorax, and abdomen with different functions. Choose the concept that fits it best.
Correct Answer: C. tagmatization
A student is revising Animal Diversity-I: an insect larva sheds its outer skeleton before increasing in size. What should the student write in the answer sheet?
Correct Answer: B. ecdysis