A substance, such as auxin, that is produced by a plant and affects how the plant grows and develops is best called

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Which of the following typically characterizes a tropical rainforests