Question

1. in a food web, the arrows ________.

a. show the movement of carrying capacity
b. represent energy flow along increasing trophic level
c. suggest potential relationships of symbiotic organism
d. point the direction of the animal or plant being eaten

1. white - tailed deer are commonly infected with a parasitic nematode (round worm) in their brains. although the brain worms show no apparent effect on white - tailed deer, it is often fatal to moose. this results in a situation where the more deer there are, the less moose can survive. what describes this phenomena?

a. the deer population and the moose population are both limited by a common carrying capacity
b. the deer and the moose population compete because they are sharing the same food resource
c. the deer and the brain worm have the same trophic level
d. the deer population reduces the moose population due to a density - dependent factor

Explanation:

1. Arrows in a food web indicate energy flow direction between trophic levels, moving to higher levels.
2. The parasite's effect on moose survival depends on deer density, a density-dependent factor.

Answer:

1. b. represent energy flow along increasing trophic level
2. d. The deer population reduces the moose population due to a density-dependent factor