Bio 15.1 Food webs Flashcards

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1
Q

What do food webs & chains describe?

A

Feeding relationships (the transfer of energy from one organism to the next).

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2
Q

What do arrows in a food chain/web represent?

A

The transfer of energy.

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3
Q

What is a trophic level?

A

The position of an organism in the food chain.

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4
Q

A food chain starts with what?

A

A producer; an organism that makes its own food. These are usually green plants that photosynthesize.

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5
Q

What are prey and predator?

A
  • Prey is the animal that gets eaten by the predator

- Predator is the animal that hunts and eats its prey

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6
Q

What are all the types of organisms in a common food chain?

A

Producer → Primary consumer → Secondary consumer → Tertiary consumer

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7
Q

In a food web, what does each image represent?

A

The entire population of that organism in that habitat.

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8
Q

What is biomass?

A

The mass of living material in an organism. It is calculated as a dry mass because living things are made up of different amounts of water.

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9
Q

What trophic level are secondary consumers at?

A

The 3rd trophic level.

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10
Q

Normally, what makes up the first trophic level in an ocean food web?

A

Microscopic phytoplankton.

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11
Q

TRUE or FALSE

The food webs on land generally have more trophic levels than the food webs in the ocean.

A

FALSE

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