In a specimen-based viva, the examiner describes this case: small external openings along the sides of an insect body lead into air tubes. Choose the concept that fits it best.
Correct Answer: D. spiracles
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
A diagram in the course handout shows that oysters and mussels are discussed in a practical note on useful invertebrates. Identify the related structure or process.
Correct Answer: B. economic value as food and pearls
A student is revising Animal Diversity-I: internal partitions divide the coelom of an earthworm into segmental compartments. What should the student write in the answer sheet?
Correct Answer: D. septum
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
A lab observation notes that arthropods occupy soil, freshwater, marine, aerial, parasitic, and social habitats with many body modifications. The observation points to:
Correct Answer: C. adaptive diversification
While comparing invertebrate groups, a mollusc removes metabolic wastes through paired kidney-like excretory organs. The feature being tested is:
Correct Answer: A. nephridia
In a specimen-based viva, the examiner describes this case: an earthworm must keep its skin moist to exchange gases effectively. Choose the concept that fits it best.
Correct Answer: B. cutaneous respiration
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
For semester exam preparation, consider this situation: a sea star moves and handles prey using hydraulic canals connected to many tube feet. The correct conclusion is:
Correct Answer: D. water vascular system
In museum study, a clam feeds by filtering water and does not scrape food from surfaces. The specimen or feature is best linked with:
Correct Answer: A. absence of radula
A lab observation notes that during earthworm digestion, food is stored briefly and then mechanically ground. The observation points to:
Correct Answer: A. crop and gizzard
A crayfish removes wastes through excretory organs located near the bases of the antennae. The best answer is:
Correct Answer: D. green glands