Question

multiple choice 1 point
the relationship between caffeine - producing plants and herbivores that develop toxin resistance is an example of:
character displacement
parasitism
coevolution
mutualism
previous

Explanation:

• Character displacement: Refers to the phenomenon where differences among similar species are accentuated in regions of sympatry (where they co - occur) but are minimized or lost in regions of allopatry (where they do not co - occur). This is not the case here as the focus is on a plant - herbivore interaction involving a toxin and its resistance, not on morphological differences between similar species.
• Parasitism: A relationship where one organism (the parasite) benefits at the expense of another (the host). In this case, the plant is not being directly harmed in a parasitic sense. The plant produces caffeine as a defense, and the herbivore evolves resistance. It is more of an evolutionary interaction rather than a parasitic one.
• Coevolution: Occurs when two or more species influence each other's evolution. Here, caffeine - producing plants evolve a chemical defense (caffeine), and herbivores that feed on these plants evolve resistance to the toxin. So, the plant's trait (caffeine production) and the herbivore's trait (toxin resistance) are evolving in response to each other.
• Mutualism: A relationship where both species benefit. In this scenario, the plant is trying to defend itself (not benefiting from the herbivore's feeding), and the herbivore is trying to overcome the plant's defense (not providing any benefit to the plant).

Answer:

C. Coevolution