Organisms that rely on other living things for food are called: a. multicellular b. vertebrates c. eukaryotes d. heterotrophs

Heterotrophs

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Answer : The correct answer is-

D. heterotrophs.

Heterotrophs are those organisms that can not synthesise their own food (unlike plants and algae) and are dependent on other organisms ( either plants or animals) for their nutritional requirements.

Example- Rabbit, deer, horse, human beings.

Thus, option D) is the right answer.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.