Topic 5 Test Review

Which organisms convert Nitrogen in the atmosphere to a usable for for plants and animals?

• Plants

• Animals

• Bacteria

• Converters

Answer explanation

Bacteria convert Nitrogen in the atmosphere to a usable form for plants and animals. Lightning is also capable of causing this.

Photosynthesis will most likely appear in which of these cycles?

• Nitrogen

• Carbon

• Water

Answer explanation

Photosynthesis appears in the Carbon cycle. It is the process by which plants convert carbon dioxide into glucose using sunlight.

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Evaporation and Condensation will most likely appear in which of these cycles?

• Nitrogen

• Carbon

• Water

Answer explanation

Evaporation and condensation are processes that occur in the water cycle.

Tags

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Which species will have the largest population?

• Hawks

• Snakes

• Rabbits

• Grass

Answer explanation

The species with the largest population is Grass. Grass is a producer, and since producers are at the bottom of the energy pyramid, that means they have more energy available and their population will be larger.

Tags

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Which species is the 2nd level consumer?

• Sharks

• Mackerel

• Herring

• Crustaceans

Answer explanation

The 2nd level consumer in this food chain is Herring, as it feeds on the primary consumer, crustaceans.

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph

• Producer

• Consumer

• Mutualist

Answer explanation

A consumer is an organism that obtains energy by eating other organisms. It cannot make its own food.

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Consumer that eats plants

• heterotroph

• herbivore

• producer

• community

Answer explanation

A herbivore is a consumer that eats plants. It is the correct choice because it specifically refers to an organism that feeds on plants.

What does a food web represent?

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

• 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 a habitat. It is the most complete representation of energy flow in comparison to food chain and energy pyramid.

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The rabbit in this food web would be considered a:

• Decomposer

• Producer

• Secondary Consumer

• Primary Consumer

Answer explanation

The rabbit is a primary consumer in this food web because it feeds directly on producers, such as plants.

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Where an organism lives and has all the resources it needs.

• habitat

• niche 

• heterotrogh

• biosphere

Answer explanation

Habitat refers to the place where an organism lives and finds all its resources. It is the correct choice for this question.