Unit 1 - Ecology Flashcards Preview

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Flashcards in Unit 1 - Ecology Deck (42):
1

Why are producers so important to an ecosystem?

Producers are important for photosynthesis, cellular respiration, and food. This is because they give energy and oxygen, which is needed to survive. They are also used as a food source

2

What is the difference between trophic level and ecological niche?

Ecological Niche- The role/position an organism has in its ecosystem (i.e. producer, consumer, composer).
Trophic Level- The actual level an animal is on a food web.

3

What is "carrying capacity"?

The number of things an ecosystem can support without environmental degradation.

4

What is "tolerance range"?

How much and little of a species an ecosystem can support. Two numbers

5

What is "optimal range"?

What is most ideal for the population of an animal. Two numbers (somewhere in between high and low).

6

What are 4 limiting factors that may be influencing the population of hares in addition to predation?

Poaching, pollution, deforestation, residential/commercial building

7

Identify if the following statement refers to cellular respiration, photosynthesis, or both. It occurs in producers.

Both

8

Identify if the following statement refers to cellular respiration, photosynthesis, or both. It occurs in consumers.

Cellular Respiration

9

Identify if the following statement refers to cellular respiration, photosynthesis, or both. Requires sunlight to occur.

Photosynthesis

10

Identify if the following statement refers to cellular respiration, photosynthesis, or both. Produces carbon dioxide.

Cellular Respiration

11

Identify if the following statement refers to cellular respiration, photosynthesis, or both. Releases energy.

Cellular Respiration

12

What is the word equation for cellular respiration?

Sugars + O2>H2O + CO2

13

What is the word equation for photosynthesis?

H2O + CO2>Sugars + O2

14

Explain how the equations for cellular respiration and photosynthesis are the basis for the carbon cycle.

Photosynthesis starts it, bringing sugars and oxygen out. Creates energy. Cellular respiration uses the stored energy. The plants and animals in photosynthesis and cellular respiration are apart of the biosphere.

15

Identify 2 human impacts that are affecting the sustainability of the carbon cycle.

Deforestation, burning fossil fuels

16

If wolves were hunted and removed from a population that is smaller than the moose population, would the moose population continuously increase?

No, limiting factors are food, space, water, disease, reproduction

17

Where does photosynthesis occur?

Chloroplasts

18

Where does cellular respiration occur?

Mitochondria

19

When does photosynthesis occur?

In the presence of light.

20

When does cellular respiration occur?

All of the time.

21

What is photosynthesis's energy source?

Light

22

What is cellular respiration's energy source?

Chemical bonds

23

Identify if the following statement refers to cellular respiration, photosynthesis, or both. Stores energy.

Photosynthesis

24

Difference between predator and prey

Predator- The animal in which is the hunter
Prey- The animal being hunted

25

Explain how predator and prey relates to sustainability.

Must be sustainable because if it is not, it will create an unbalance in the ecosystem, causing it to be unsustainable.

26

What is the source of energy in a food web?

The sun.

27

Explain the difference between matter (nutrients) and energy in a food web.

Nutrients cycle (matter), energy flow

28

Why is the hawk important to the sustainability of this ecosystem (highest trophic level).

If it becomes special concern or worse, it will disrupt the food web. Since they eat animals on the trophic level lower, they will overpopulate. The hawk keeps the numbers of others in tact.

29

All the water on and just above Earth (lithosphere, atmosphere, biosphere, hydrosphere).

Hydrosphere

30

Mountains, sand, rock (lithosphere, atmosphere, biosphere, hydrosphere).

Lithosphere

31

All life on Earth ((lithosphere, atmosphere, biosphere, hydrosphere).

Biosphere

32

All of the air on Earth (lithosphere, atmosphere, biosphere, hydrosphere).

Atmosphere

33

What is "abiotic"?

Non-living (includes dead animals)

34

What is "biotic"?

Living

35

A sustainable ecosystem is one that _____________.

Has predictable and balanced abiotic and biotic features.

36

In a pyramid of biomass, the __________ tend to have the largest mass.

Decomposers

37

What is "biomass"?

The mass of living biological organisms in a given area or ecosystem at a given time.

38

Define "extirpated".

No longer exists in an area.

39

Define "special concern".

Extremely uncommon or has highly specific habitat requirements. Deserves monitoring of its status.

40

Define "threatened".

Likely to become endangered.

41

Define "endangered".

A species is threatened with extinction.

42

Define "extinct".

No longer in existence.