Answer: b. Muscles
A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.
Hence, locomotion in metazoa is due to contraction of muscles.
Answer:
The answer is meiosis
Explanation:
Mitosis results in daughter cells with the same genetic component as the parent. Hence, a drastic change in the environment may wipe out the entire population of organisms that only reproduce by mitosis.
Answer:
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Explanation:
Answer:
Work can transfer energy between objects and cause a change in the form of energy.