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Flashcards in Key Terms Deck (21)
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1

Photosynthesis

How plants make food

2

Cell Respiration

How cells get energy from food

3

Sustainable

Maintaining balance and characteristics through natural processes over a long period of time

4

Trophic Levels

The position an organism is on a food chain.


-producer, primary consumer, secondary, tertiary
-plants, herbivores, carnivores, top carnivores
-autotroph, 1st order heterotroph, 2nd order, 3rd order

5

Ecological Pyramid

Shows the relationship between trophic levels in an ecosystem

6

Energy Pyramid

Shows the total energy (in J) that is available at each trophic level

7

Number Pyramid

Indicates how much food is needed to support the top carnivore in a food chain

8

Biomass Pyramid

Shows the total mass (in kg) of organisms at each trophic level

9

Competition

When 2 organisms compete for the same resource

10

Predation

When an predator kills and eats its prey

11

Mutualism

When 2 organisms interact and both benefit

12

Parasitism

When a parasite lives on or in a host and feeds on it

13

Commensalism

When one organism benefits and the other neither benefits or is harmed

14

Carrying Capacity

The maximum population size of a particular species that an ecosystem can sustain

* carrying capacity can be changed

15

Tolerance Range

The abiotic conditions that a species can survive in

16

Heterotroph

An organism that relies on other organisms as a source of food

17

Limiting Factor

A factor that could restrict the size of a population (biotic, abiotic or by human influences)

18

Invasive Species

An non-native species that is introduced into a different region accidentally or intentionally

19

The Water Cycle

The process of cycling water through the environment

20

The Carbon Cycle

Shows how carbon moves through abiotic and biotic parts of an ecosystem

21

Nitrogen

Shows how nitrogen is converted to forms that are accessible to organisms