In a food chain, with each feeding relationship, the energy transferred from one organism to another will

Question

A. Decrease.
B. Remain constant.
C. Increase.
D. Be independent of the level.

Most food chains normally consist of no more than

A. Two to three organisms.
B. Eight to nine organisms.
C. Three to five organisms.
D. Zero to one organism.

The black bear is common to north america. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammals--including those already dead-- are also part of their diet. Some tend to wander near campsites and can develop a taste for human food and garbage. Given this information, which term most accurately characterizes black bears?

A. Decomposers
B. Producers
C. Carnivores
D. Omnivores

What is the usual composition of a food chain?

A. a decomposer, a producer, and some consumers
B. a producer and multiple consumers
C. a decomposer, some producers, and a consumer
D. multiple producers and a consumer

Answer 1

1. In a food chain, with each feeding relationship, the energy transferred from one organism to another will

A. Decrease.

Energy transfer in a food chain is typically inefficient, with only about 10% of the energy being passed on to the next trophic level, leading to a decrease in energy as you move up the chain.

2. Most food chains normally consist of no more than

C. Three to five organisms.

Food chains typically have three to five trophic levels due to inefficiencies in energy transfer, limiting the number of levels that can be sustained.

3. The black bear is common to North America. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammals—including those already dead—are also part of their diet. Some tend to wander near campsites and can develop a taste for human food and garbage. Given this information, which term most accurately characterizes black bears?

D. Omnivores

Black bears are classified as omnivores because they have a diverse diet that includes both plant and animal matter.

4. What is the usual composition of a food chain?

A. a decomposer, a producer, and some consumers

In a typical food chain, there is usually at least one producer (like plants), several consumers (herbivores and carnivores), and decomposers that break down dead organic matter, linking all parts of the ecosystem.