Food Chains, Food Webs & Ecopyramids

Which is a producer?

• deer
• tall grass
• lion
• worm

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What is this called?

• Food Web

• Food Chain

• Abiotic Factors

Answer explanation

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. In contrast, a food web is a complex network of food chains, and abiotic factors are non-living parts of an ecosystem.

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What does a Primary Consumer eat?

• Tertiary Consumers

• Secondary Consumers

• Producers

Answer explanation

A Primary Consumer, also known as a herbivore, eats Producers. Producers are organisms that produce their own food through photosynthesis, such as plants and algae. They form the base of the food chain, providing energy for primary consumers. Therefore, the correct answer to the question 'What does a Primary Consumer eat?' is 'Producers'.

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A tertiary (third-order) consumer has to be which type?

• Carnivore.

• Decomposer.

• Producer.

• Herbivore.

Answer explanation

In a food chain, a third-level consumer, also known as a tertiary consumer, is typically a carnivore. This is because they feed on secondary consumers, which are usually herbivores. Therefore, the correct answer to the question is 'Carnivore.'

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In a food web, arrows point at:

• who gets energy.

• who gets eaten.

Answer explanation

In a food web, the arrows are used to indicate the flow of energy. They point from the organism that is being consumed to the organism that is doing the consuming. Therefore, the arrows point at 'who gets energy', as energy is transferred up the food chain from one organism to another.

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What does a food web represent?

• All connections of energy flow throughout all organisms in a ecosystem.

• The specific ways that mutualism is carried out.

• A single pathway or energy flow between organisms. 

• How carnivores get their food. 

Answer explanation

A food web represents all connections of energy flow throughout all organisms in an ecosystem. It's not about specific mutualism ways, a single energy flow pathway, or how carnivores get their food. It's a comprehensive map of energy transfer from one organism to another across the entire ecosystem.

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Which of the following is a herbivore?

• cricket

• frog

• hawk

• shrew

Answer explanation

The question asks for a herbivore among the given options. A herbivore is an animal that gets its energy from eating plants. Among the options, cricket is a herbivore. Frogs, hawks, and shrews are not herbivores as they consume other animals for their energy needs.

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A community of living and nonliving things in their natural environment makes up a 

• food web

• ecosystem

• food chain

Answer explanation

An ecosystem refers to a community of living and nonliving things interacting in their natural environment. While a food web or food chain are parts of an ecosystem, they do not encompass the entire community of organisms and their environment. Therefore, the correct answer to the question is 'ecosystem'.

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Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.

• Omnivore

• Herbivore

• Carnivore

• Delivore

Answer explanation

The question asks about the diet of lions, which includes buffalo, antelopes, zebras, and crocodiles. These are all animals, indicating that lions are carnivores. Carnivores are animals that primarily eat other animals. Therefore, the correct answer is 'Carnivore'.

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Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.

• Franivore

• Carnivore

• Herbivore

• Omnivore

Answer explanation

The correct answer is 'Omnivore'. This is because omnivores are animals that eat both plants and other animals, which aligns with the diverse diet of bears mentioned in the question.

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