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
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All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
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
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
A student is revising Animal Diversity-I: a crustacean limb branches into two main rami from a common base. What should the student write in the answer sheet?
Correct Answer: D. biramous appendage
During a Zoology practical, an insect uses hardened mouthparts to bite and chew solid food. Select the most accurate identification.
Correct Answer: A. mandibles
Most adult arthropod organs are bathed by hemolymph in enlarged body sinuses. The best answer is:
Correct Answer: B. hemocoel
A learner makes a note: in a spider, the head and thoracic regions are fused into one anterior body region. The missing scientific idea is:
Correct Answer: B. cephalothorax
In museum study, a centipede-like specimen has an elongated body with many leg-bearing segments. The specimen or feature is best linked with:
Correct Answer: A. many trunk segments with legs
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
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
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
A lab observation notes that a caterpillar transforms into a pupa and then an adult butterfly. The observation points to:
Correct Answer: D. metamorphosis