Ecosystems And Biomes Test Part 2 Of 2: Question Preview (ID: 19822)

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13. How do abiotic factors and biotic factors differ?
a) Abiotic factors in an ecosystem never change.
b) Abiotic factors do not affect biotic factors.
c) Biotic factors are living, and abiotic factors are nonliving.
d) Only biotic factors are part of an ecosystem.

11. When communities form in previous uninhabited areas, this is called
a) primary succession
b) secondary succession
c) a climax community
d) a keystone species

12. Common decomposers include
a) fungi and plants
b) algae and plants
c) bacteria and fungi
d) algae and bacteria

10. Tiger sharks could be considered a keystone species because they
a) are at the highest trophic level of a food pyramid
b) have little impact on other aquatic populations
c) are able to adapt to most types of marine ecosystems
d) keep turtle populations under control, which protects sea grasses

8. Which of the following is an example of parasitism?
a) clownfish living in a sea anemone
b) fleas living on a dog
c) blue jays living in a maple tree
d) wolves and rabbits living in the forest

9. An herbivore is a
a) primary consumer
b) secondary consumer
c) tertiary consumer
d) producer

7. What will most likely happen if two species compete for the exact same resources in the same ecosystem at the same time?
a) Eventually the resources will be depleted and both species will die out.
b) Eventually one species will hunt the other species until it becomes extinct.
c) Eventually the ecosystem will adapt to provide enough resources for both species.
d) Eventually one species will outcompete the other into extinction or emigration.

5. An animal that eats only plants is a(n)
a) carnivore
b) detritivore
c) herbivore
d) omnivore

6. How do consumers always obtain energy?
a) by eating organisms
b) by eating plants
c) by absorbing detritus
d) by capturing radiation from the sun

4. What type of species interaction directly benefits both species involved?
a) commensalism
b) mutualism
c) parasitism
d) symbiosis

3. A population is made up of individual members of the same
a) ecosystem
b) community
c) habitat
d) species

1. Which of the following is NOT a freshwater ecosystem?
a) tidal pool
b) lake
c) pond
d) riiver

2. What type of organism is at the basis of all food chains?
a) herbivore
b) carnivore
c) producer
d) consumer

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