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Question 2

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Define ecology

Answer 2

The study of interactions among living things.

Question 3

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list the levels of ecological organization in order from smallest to largest

Answer 3

Organisms, population, community, ecosystems, bio something.

Question 4

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3. Explain the difference between biotic and abiotic factors. Give examples of each.

Answer 4

Biotic–living factors (bacteria), abiotic–nonliving factors (weather)

Question 5

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4. Define biodiversity. Why is it important?

Answer 5

?

Question 6

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5. What is a keystone species?

Answer 6

An organism that has an unusually large effect on its environment.

Question 7

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6. Explain the difference between autotrophs and heterotrophs. Give an example

Answer 7

auto trips, producer (plants) heterotrophs, consumer (eat)

Question 8

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7. What is a food chain?

Answer 8

a sequence that links species by their feeding relationship.

Question 9

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B. Explain the difference between carnivores and herbivores.

Answer 9

Carnivores, consuming other animals only. Herbivores, eat only plants. Omnivores, eat both.

Question 10

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9. Explain the difference between detritivores and decomposers .

Answer 10

detritivores, consume dead matter. decomposers, is a type of detritivores that drank down organic matter.

Question 11

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10. What is a food web?

Answer 11

A model that shows the complex network of?

Question 12

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11. Describe the water cycle.

Answer 12

The flow of water from the atmosphere to the surface, to below ground, and then back.

Question 13

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12. What 2 processes cycle oxygen through the atmosphere?

Answer 13

Photosynthesis and respiration.

Question 14

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13. What Organism fixes nitrogen a form we can use?

Answer 14

Bacteria

Question 15

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14. What happens to the amount of energy as you move up the food chain?

Answer 15

It decreases 90%.

Question 16

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15. What does a pyramid of numbers show?

Answer 16

The number of individuals and in atropic level.

Question 17

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16. Explain the difference between niche and habitat.

Answer 17

Habitat, environment where an organism lives. Niche, how an organism lives

Question 18

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17. What does the competitive exclusion principle state?

Answer 18

if the two organisms compete for the same limited resources one will be pushed out made extinct.

Question 19

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18. What are ecological equivalents?

Answer 19

to organisms that live in similar habitats far away from each other.

Question 20

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19. Define competition.

Answer 20

Two organisms fight for a limited resource.

Question 21

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20. Explain the difference between intraspecific competition and interspecific competition.

Answer 21

Intraspecific, two of the same species compete. Interspecific, to use different species compete.

Question 22

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21. Define predation.

Answer 22

An organism captures or eats another organism.

Question 23

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22. Define symbiosis.

Answer 23

A close relationship between two or more different organisms.

Question 24

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23. What are the 3 types of symbiosis? Explain each.

Answer 24

?

Question 25

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24. How do you calculate population density?

Answer 25

number of individuals/area square

Question 26

# test bio 25. Describe the 3 dispersion patterns and what causes each.

Answer 26

uniform, evenly distributed. Clumped,? Of animals. Random, no order, no specific place.

Question 27

# test bio 26. What is this survivorship curve? ![]() | (Humans/large mamals)

Answer 27

Type 1

Question 28

# test bio 27. Explain the difference between immigration and emigration.

Answer 28

Immigration, movement into an environment. Emigration, out of an environment.

Question 29

# test bio 28. Explain the difference between logistic growth and exponential growth. Draw a graph for each.

Answer 29

?

Question 30

# test bio 29. What is carrying capacity?

Answer 30

Number of individuals environment can support.

Question 31

# test bio 30. What is a limiting factor?

Answer 31

Factor that limits population growth.

Question 32

# test bio 31. Explain the difference between density-dependent limiting factors and density-independent limiting factors. Give 2 examples of each.

Answer 32

Density dependent.A density dependent factor is a limiting factor that depends on population size. A Density-independent limiting factor affects all populations in similar ways, regardless of the population size.

Question 33

# test bio 32. What is succession?

Answer 33

Sequence of biotic changes that regenerate a damaged community in a previously uninhabited area.

Question 34

# test bio 33. Explain the difference between primary and secondary succession.

Answer 34

Primary succession begins in areas where no soil is present. Secondary succession occurs in areas where there is soil already present.

Question 35

26. What is this survivorship curve? ![]() (Reptiles/Birds/Small mamals)

Answer 35

Type 2

Question 36

26. What is this survivorship curve? ![]() (Fish/Insects/Turtles)

Answer 36

Type 3