A learner makes a note: a practical list includes Nereis to demonstrate parapodia and many bristles. The missing scientific idea is:
Correct Answer: B. Nereis as a polychaete representative
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
For semester exam preparation, consider this situation: a butterfly life cycle includes egg, larva, pupa, and adult. The correct conclusion is:
Correct Answer: D. complete metamorphosis
During a Zoology practical, a sea urchin test is made of hard internal plates beneath the skin. Select the most accurate identification.
Correct Answer: C. endoskeleton of calcareous ossicles
A lab observation notes that a flattened annelid has suckers and lacks setae in adult form. The observation points to:
Correct Answer: D. leeches
An animal with a hard exoskeleton has paired limbs divided into movable sections. The best answer is:
Correct Answer: A. jointed appendages
A diagram in the course handout shows that a young grasshopper resembles a small wingless adult and gradually develops wings through molts. Identify the related structure or process.
Correct Answer: C. incomplete metamorphosis
A student is revising Animal Diversity-I: a specimen has thick arms that merge gradually with a central disc and uses tube feet for movement. What should the student write in the answer sheet?
Correct Answer: B. sea stars
A learner makes a note: an octopus captures prey with flexible arms and shows complex behaviour. The missing scientific idea is:
Correct Answer: D. well-developed head and arms
For semester exam preparation, consider this situation: an earthworm transports blood through dorsal and ventral vessels rather than open sinuses. The correct conclusion is:
Correct Answer: B. closed circulatory system
During a Zoology practical, a crab must molt because its rigid outer covering limits growth. Select the most accurate identification.
Correct Answer: D. chitinous exoskeleton
While comparing invertebrate groups, a lecturer explains why arthropod legs can move powerfully despite being externally armored. The feature being tested is:
Correct Answer: D. exoskeleton provides muscle attachment
In a specimen-based viva, the examiner describes this case: a specimen has slender flexible arms sharply set off from the central disc. Choose the concept that fits it best.
Correct Answer: D. brittle stars