What is the difference between a consumer and a producer??

Consumers are organisms that eat both plants and animals. Producers are organisms that eat only plants.

Producers are organisms that eat other organisms. Consumers are organisms that make their own food using the energy from the sun.

Producers are organisms that eat both plants and animals. Consumers are organisms that eat only plants.

Consumers are organisms that eat other organisms. Producers are organisms that makes their own food using the energy from the sun

The correct answer is: Consumers are organisms that eat other organisms, while producers are organisms that make their own food using the energy from the sun.

Which trophic level is always a necessity in an energy pyramid or food chain?

secondary consumer

primary consumer

producer

tertiary consumer

The correct answer is producer. Producers, such as plants, are always a necessity in an energy pyramid or food chain as they convert sunlight into energy through photosynthesis, providing the primary source of energy for all other organisms in the ecosystem.

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

decrease.

remain constant.

increase.

be independent of the level.

The correct answer is decrease.

In a food chain, as energy is transferred from one organism to another, a significant amount of energy is lost as heat or used for the organism's own metabolic activities. As a result, there is a decrease in the amount of energy available for the next organism in the chain. This decrease in energy transfer is known as the 10% rule, where only about 10% of the energy from one trophic level is passed on to the next trophic level.

The black bear is common to North America. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammalsβ€”including those already deadβ€”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?

The term that most accurately characterizes black bears based on the given information is "omnivore."

Black bears have a diverse diet that includes both plant-based foods like grass, roots, and berries, as well as animal-based foods such as insects, fish, and mammals. The fact that they can also consume human food and garbage indicates their flexible and opportunistic eating habits. As such, black bears are classified as omnivores – organisms that consume a mixture of plant and animal matter.

If producers generate 100% of the energy, what percentage of that energy is left by the time it reaches tertiary consumers?

0.1%

10%

100%

1%

By the time the energy reaches tertiary consumers, approximately 1% of the original energy generated by producers is left.

Animals obtain their nitrogen from

plants.

nitrites.

bacteria.

nitrates