A diagram in the course handout shows that a sea star opens a bivalve shell by attaching many small hydraulic projections to it. Identify the related structure or process.
Correct Answer: B. tube feet
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
A learner makes a note: an octopus releases a dark cloud that distracts predators during escape. The missing scientific idea is:
Correct Answer: B. ink sac
For semester exam preparation, consider this situation: a lecturer asks why repeated body compartments helped annelids become efficient burrowers. The correct conclusion is:
Correct Answer: D. segmentation improves locomotion
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
While comparing invertebrate groups, water enters the sea star water vascular system through a sieve-like plate on the aboral surface. The feature being tested is:
Correct Answer: C. madreporite
An earthworm body is divided into repeated ring-like units along its length. The best answer is:
Correct Answer: C. metamerism
A diagram in the course handout shows that a marine worm releases gametes into water and produces swimming larvae. Identify the related structure or process.
Correct Answer: D. separate sexes and external fertilization often occur
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
In museum study, an adult sea star has body parts arranged around five radiating arms. The specimen or feature is best linked with:
Correct Answer: C. pentaradial adult symmetry
During a Zoology practical, a large opening at the top of a sponge releases filtered water back to the environment. Select the most accurate identification.
Correct Answer: A. osculum
While comparing invertebrate groups, hydra digests food in a central cavity that has a single opening used for both ingestion and egestion. The feature being tested is:
Correct Answer: B. gastrovascular cavity
In a specimen-based viva, the examiner describes this case: a leaf-shaped parasite lives in the bile ducts of sheep and is commonly called liver fluke. Choose the concept that fits it best.
Correct Answer: B. Fasciola hepatica