Which best describes the statements below?*
1. Bees pollinate plants as they move from flower to
flower gathering nectar.
2. Green algae grow on the backs of spider crabs living
in shallow water, camouflaging the spider crabs
while the crabs protect the algae from predators.
The answer is B, the nectar being taken away from the flower isn’t effecting the flower, which is commensalism. In the second statement the algae is giving something to the crab and is getting something in return, which is mutualism.
