A student observes that mammalian sweat glands help cool the body. This is an example of the integument contributing to:
Correct Answer: A. Thermoregulation
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All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
A reptile moves efficiently on land partly because its body covering reduces:
Correct Answer: A. Water loss
An amphibian kept in a very dry container becomes stressed quickly. The physiological reason is that its skin is:
Correct Answer: A. Permeable and easily loses water
A microscope slide shows dense keratin in mammalian hair. Keratin is important because it gives hair:
Correct Answer: A. Strength and protection
A student sees muscles arranged circularly and longitudinally in an earthworm. Their alternating contraction helps the worm:
Correct Answer: A. Crawl by lengthening and shortening body segments
When an animal stands still against gravity, the skeletal system is performing mainly a:
Correct Answer: A. Support function
A veterinarian explains that tendons connect muscles to bones. Their main mechanical role is to:
Correct Answer: A. Transmit muscle force to the skeleton
An animal with a soft body and no hard skeleton still maintains shape using internal fluid pressure. The best example of this support system is:
Correct Answer: A. Hydrostatic support in annelids
A cockroach can walk immediately after losing one leg, but movement becomes less stable. This shows jointed appendages mainly help in:
Correct Answer: A. Coordinated locomotion and balance
A shark skeleton differs from a typical bony fish because it is mainly:
Correct Answer: A. Cartilaginous
A student notes that cartilage is flexible compared with bone. Cartilage is especially useful where the body requires:
Correct Answer: A. Support with flexibility
A fish uses fins to maintain balance and direction while swimming. Fins function together with muscles and skeleton as:
Correct Answer: A. Locomotor and stabilizing structures