While comparing invertebrate groups, a mollusc removes metabolic wastes through paired kidney-like excretory organs. The feature being tested is:
Correct Answer: A. nephridia
Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with 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
For semester exam preparation, consider this situation: aquatic molluscs exchange gases through comb-like structures in the mantle cavity. The correct conclusion is:
Correct Answer: D. gills called ctenidia
A lab observation notes that in most molluscs, blood leaves vessels and bathes organs directly in body spaces. The observation points to:
Correct Answer: D. hemocoel in most classes
In a specimen-based viva, the examiner describes this case: a molluscan embryo passes through a ciliated larval form also seen in annelid life cycles. Choose the concept that fits it best.
Correct Answer: C. trochophore larva
A student is revising Animal Diversity-I: a chiton clings to rocks and has a shell divided into eight overlapping plates. What should the student write in the answer sheet?
Correct Answer: D. eight dorsal shell plates
During a Zoology practical, a squid escapes danger by forcefully expelling water through a funnel. Select the most accurate identification.
Correct Answer: D. jet propulsion
A squid needs efficient oxygen delivery for fast swimming and active predation. The best answer is:
Correct Answer: B. closed circulatory system
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
In museum study, a mussel pumps water across large gills that trap suspended food particles. The specimen or feature is best linked with:
Correct Answer: D. filter feeding with gills
While comparing invertebrate groups, a clam protects its soft body with left and right valves joined by a hinge ligament. The feature being tested is:
Correct Answer: B. two hinged shells
A diagram in the course handout shows that a snail shell and internal organs show coiling and one-sided arrangement after development. Identify the related structure or process.
Correct Answer: A. asymmetrical adult body