The animal that uses jet propulsion to locomote is
Correct answer: C. Jellyfish
- A. Snail
- B. Starfish
- C. Jellyfish
- D. Earthworm
Explanation
Jellyfish are known for using jet propulsion to move. They contract their bell-shaped body, expelling water to push themselves forward. This unique form of locomotion is well-suited to their aquatic environment. In contrast, snails, starfish, and earthworms use entirely different methods to move. Snails glide on a muscular foot, starfish rely on tube feet, and earthworms expand and contract their bodies to move through soil.
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Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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