GSS sep7-9

Question 1

How do earthworms help cycle matter through the ecosystem?

Answer 1

They break down dead material, releasing nutrients for use again.

Question 2

________ percent of energy moves on to the next trophic level, the rest is lost as ___________.

Answer 2

10, heat & waste

Question 3

Check all that are abiotic factors in an ecosystem.

Answer 3

water, weather and air

Question 4

Why might omnivores be particularly adapted to changes in an environment?

Answer 4

Their energy sources are the most plentiful in an ecosystem

Question 5

Organisms of the same species can ________________.

Answer 5

reproduce

Question 6

Deer live in family groups which is an example of _________.

Answer 6

clumped distribution

Question 7

Eats dead plant/animal matter

Answer 7

Decomposer

Question 8

Only eats plants

Answer 8

Herbivore

Question 9

Eats both plants and animals

Answer 9

Omnivore

Question 10

Only eats other animals

Answer 10

Carnivore

Question 11

Eats dead animals

Answer 11

Scavenger

Question 12

Check all that are biotic factors in an ecosystem.

Answer 12

human activities and available food sources

Question 13

When individuals exit a population they __________________, when they come in they _________________.

Answer 13

emigrate, immigrate

Question 14

Owl and rat

Answer 14

Competition

Question 15

A crab with a sea urchin on its back

Answer 15

Mutualism

Question 16

An oak tree and a robin making a nest

Answer 16

Mutualism

Question 17

A tapeworm living in a dog

Answer 17

Parasitism

Question 18

Two or more organisms fighting over resources

Answer 18

Competition

Question 19

If the primary consumers in a food chain become extinct, what will most likely happen?

Answer 19

The secondary consumers will also die out.

Question 20

What city would have the HIGHEST population density?

Answer 20

LA

Question 21

Species that keeps others in check

Answer 21

Keystone Species

Question 22

Communities are replaced over time by new ones

Answer 22

Succession

Question 23

Restart on old ecosystem

Answer 23

Primary Succession

Question 24

Occurs when communities form on a surface that was previously unoccupied by organisms

Answer 24

keystorn

Question 25

First organisms to colonize an area

Answer 25

Pioneer Species