In museum study, a planarian has a mouth and branched gut but no separate anus. The specimen or feature is best linked with:
Correct Answer: B. incomplete digestive tract
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
A lab observation notes that a rotifer grinds food using a muscular pharynx containing hard jaws. The observation points to:
Correct Answer: C. mastax with trophi
During a Zoology practical, a protozoan parasite completes part of its life cycle in Anopheles mosquito and part in humans. Select the most accurate identification.
Correct Answer: B. malaria
While comparing invertebrate groups, a sponge obtains nutrition by pumping water and trapping suspended particles. The feature being tested is:
Correct Answer: D. filter feeding
In a specimen-based viva, the examiner describes this case: a transparent marine animal swims by rows of fused cilia that look like shimmering combs. Choose the concept that fits it best.
Correct Answer: D. comb plates
A learner makes a note: a flatworm relies largely on diffusion because its thin body brings cells close to the environment or gut. The missing scientific idea is:
Correct Answer: B. lack of circulatory system
For semester exam preparation, consider this situation: a rotifer population increases rapidly when females produce eggs without fertilization. The correct conclusion is:
Correct Answer: B. parthenogenesis
A student is revising Animal Diversity-I: a flagellated blood parasite transmitted by tsetse fly is reported in an African disease case. What should the student write in the answer sheet?
Correct Answer: D. sleeping sickness
In museum study, most sponge bodies cannot be divided into equal halves through a fixed plane. The specimen or feature is best linked with:
Correct Answer: A. asymmetry
A lab observation notes that a comb jelly captures prey using sticky cells rather than stinging capsules. The observation points to:
Correct Answer: D. colloblasts
A parasitic flatworm has an outer covering that protects it from host digestive enzymes. The best answer is:
Correct Answer: C. tegument
A diagram in the course handout shows that a rotifer has a body cavity derived from blastocoel and not fully lined by mesoderm. Identify the related structure or process.
Correct Answer: C. pseudocoelom