"An example of mutualism in the rainforest is the pollination of the Durian tree by bats."
Answer:

✏ Arteries are the vessels that carry blood away from the heart to various organs of the body.Since, the blood emerges from the heart under high pressure, the arteries have thick, elastic walls.
D) chromosomes exchange genetic material in step 3
Explanation: the student claims that the cell division increases genetic variation, and D) is the only one which mentions exchanging genetic material/increasing variation
Answer:
The primary function of a ribosome is protein synthesis.