A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant’s pollen and herbivores that feed on the plant. An adaptation occurred through several generations of the plant species, and the plant is now known for its long, sharp thorns. Why might this adaptation have occurred? A.
to absorb more water and nutrients

B. to attract more pollinators
C. to discourage herbivores
D. to provide shade for the plant

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

You decide that the introduction should also discuss the extremophiles that are referred to as the archaea. these single-cell organisms are considered "extremophiles" due to their ability to survive and reproduce in environmental conditions that would be hostile for most living organisms. archaea species have been isolated from highly acidic sulfur springs, ocean floor thermal vents with temperatures that exceed boiling, and subarctic ice well below freezing. while still considered to be prokaryotic, the archaea have numerous differences that place them apart from the bacteria. choose the characteristics that separate the archaea from other prokaryotic cells. select all that apply. view available hint(s) select all that apply. archaea lack true peptidoglycan in their cell walls. the morphology of the cell is rigid and is geometric in shape, similar to a sphere or cylinder. the cytoplasmic membrane lipids of archaea have branched or ringform hydrocarbon chains. all currently identified and characterized archaea have been linked as the causative agent to an animal or human disease.

Time ! for a smell to begin the process of registering in your brain, first you must a) inhale odor molecules into the nasal cavity b)transduce scent chemicals c)have a scent to inhale d)all answers can work