46.) Relative to body mass, which of these animals spends the most energy due to

Question

46.) Relative to body mass, which of these animals spends the most energy due to locomotion? a) a fruit fly running b.) a horse running c.) a whale swimming d.) a penguin swimming e.) a goose fnying 47.) Flexor muscles a.) are found in insects b.) are found in vertebrates ) pull bones closer together ) both a and b e.) a, b, and c 48.) Skeletal systems are required for a.) protection b.) maintenance of body posture c.) re-extension of shortened muscles d.) transfer of muscle forces to other parts of the body e.) all of the above 49.) What type of skeleton does an arthropod have? a.) an endoskelton b.) an exoskeleton c.) a hydrostatic skeleton d.) a, b, or c, depending on the species e.) none of the above 50.) Relative to body mass, which of these animals would have the heaviest bones? a.) Argentinosaurus huinculensis (biggest dinosaur to have ever lived) b.) elephant c.) polar bear d.) house cat e.) humming bird

Explanation / Answer

46. Aquatic locomotion in vetical position requires less energy than horizontal swimming. Terrestrial lopcomotion spends energy relative to body weight. Arboreal locomotion of flying requires more energy and the body weight is relatively distributed to all body parts for enabling flying. Therefore, a goose spends more energy fopr flying. This because, arboreal locomotion is aganist the gravity. To pull the body mass into air, goose requires to spend more energy. The option e is correct.

47. Flexor muscles are muscles that flex the joint by decreasing the angle between bones converging at a point. Examples include Biceps brachii, pectoralis major, flexor carpi radialis, and hip flexors like psosas major etc. The option c is correct.

48. The functions of skeletal muscles are providing, support, protection, maintenance posture or shape, enables movement and produces the blood cells in the bone marrow. The option e is correct.

49. Arthropods have exoskeleton that protects the insect bodies. The exoskeleton contains a compound called chitin. Chitin is a hard polysaccharide and has water proof nature. The option b is correct.

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