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Pre-AP Biology 101 > Ecology > Flashcards

Flashcards in Ecology Deck (32):
1

 

These factors affect all populations in a given area in similar ways, regardless of the population size

 

Density Independent

2

 

Define carrying capacity

 

Largest number of individuals that a given environment can support 

3

 

What type of reproduction is described:

•Reproduce often.

•Have lots of offspring.

•Have short life spans.

•Have offspring that are small and mature rapidly with little parental care. 

 

R-Strategist Reproduction

4

 

The various processes in the nitrogen cycle are mostly performed by

 

Bacteria

5

 

What type of reproduction is described:

•Grow slowly and have small populations.

•Require a stable environment.

•Be near carrying capacity.

•Have long life spans.

•Reproduction late in life.

•Provide extensive care to their young.

 

K-Strategist Reproduction

6

 

How do plants incorporate nitrogen into organic compounds?

 

Assimilation

7

 

A habitat is

 

The place where an organism lives

8

 

The rate at which autotrophs make food

 

Primary productivity

9

 

Conversion of nitrates into nitrogen gas

 

Denitrification

10

 

Through what process do nitrogen-fixing bacteria make nitrogen into a usable form

 

Nitrogen Fixation

11

 

Provide an example of a decomposer

 

Fungi, bacteria

12

 

Ammonification is...

 

The process by which ammonia is made during the decay of organic matter

13

 

True or false: two different organisms can share the same niche and the same habitat

 

False

14

 

What controls the amount of energy available throughout the entire ecosystem?

 

The rate at which the autotrophs make food (the primary productivity)

15

 

Erosion and volcanic activity release carbon dioxide into the atmosphere

 

Geochemical processes

16

 

When two species use the same resources, or have the same niche, they experience 

 

Competition

17

 

Water passes from plants to the atmosphere

 

Transpiration

18

 

The original source of energy for most organisms in most ecosystems is

 

The sun

19

 

What are the two most important aspects of climate?

 

Temperature and moisture

20

 

How much energy is transferred from one trophic level to the next? What happens to the rest?

 

10%

The rest is lost as heat

21

 

What is evaporation?

 

Water is heated, turns to gas, and reenters the atmosphere

22

 

Carbon dioxide is released when living organisms exhale

 

Respiration

23

 

The full range of biological conditions in which an organism lives and how it uses those conditions

 

 

Niche

24

 

What trophic level would you place a snake that ate a mouse that ate some grass.

 

Second level consumer (secondary consumer)

25

 

Water falls (in some form) from the atmosphere to the Earth

 

Precipitation

26

 

What is succession?

 

Replacement of one community by another as the environment changes

27

 

Factors that cause a population size to level off or decrease

 

Limiting Factor

28

 

Of all nonliving components, which has the greatest influence on the ecosystem's inhabitants?

 

 

WATER

29

 

What four things influence a population's growth rate?

 

Birth Rate

Death Rate

Immigration

Emigration

30

 

What are the three most important characteristics of a population?

 

1. žGeographic distribution or range

2. žPopulation density – the number of  individuals per unit area

ž3. Growth rate

31

 

What trophic levels could the hawk be part of?

 

Tertiary consumer & secondary consumer

32


What is combustion?

 

—Carbon trapped in living things, like wood, or previously living things, like fossil fuels, is released when the substance is burned