Ecology semester review 22-23

Fill in the missing levels of ecological organization: species (organism) --> __ --> community --> __ --> biome --> __.

An ecosystem is the combination of all the biotic and abiotic components in an environment. Which picture is an example of an ecosystem?

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A population is one species that occupies a particular geographic area. Which picture is an example of a population?

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What is the difference between the biotic and abiotic components in an ecosystem?

• biotic are the living components; abiotic are the nonliving components

• abiotic are the living components; biotic are the nonliving components

• biotic are the eukaryotic components; abiotic are the prokaryotic components

• biotic are the plants and animals; abiotic are the bacteria components

Which of the following describes a relationship between abiotic and biotic component in an ecosystem.

• frogs need lily pads to sit on.

• mice need grain to eat

• frogs need water to keep their skin moist.

• frogs develop from tadpoles.

Are the following examples of biotic or abiotic environmental components?

Sunlight, Air, Rocks, Soil and Water

• abiotic

• biotic

Are the following examples of biotic or abiotic environmental components?

Mushrooms, Bacteria, Frogs, Log (dead tree)

• abiotic

• biotic

All organisms need food to live must make their own food or eat other organisms for nourishment. Mushrooms, bacteria and hawks are __; but grass, trees and algae are __.

What do the arrows in a food web represent?

• Movement of organisms through an ecosystem

• Movement of animals through an ecosystem

• Movement of energy through an ecosystem

How does a nonnative species effect native species?

• They compete for resources

• They have a mutualistic relationship

• They have no effect on each other.