Unit Review

Question 1

Components of an ecosystem

Answer 1

Abiotic and biotic

Question 2

Ecosystem

Answer 2

All living organisms that share a region and interact with one another.

Question 3

Population

Answer 3

Group of the same species

Question 4

Community

Answer 4

All the different species that make up the ecosystem

Question 5

Lithosphere

Answer 5

The rocky shell of the planet, which is above the organic mantle

Question 6

Food chains

Answer 6

A chart that shows who eats whom in nature, and shows where an organism sits in its appropriate feeding level

Question 7

Food webs

Answer 7

A much more complex version of food chains, and shows the impact of introducing or eliminating species in a web

Question 8

Herbivore

Answer 8

Animal that eats plants or producers

Question 9

Mutualism

Answer 9

A relationship in where both species benefit

Question 10

Invasive species

Answer 10

A foreign species whose introduction negatively impacts the natural environment

Question 11

Bioaccumulation

Answer 11

Increase in concentration of a substance the higher it goes up the food chain

Question 12

Atmosphere

Answer 12

Gas layer hundreds of kilometres above the earth’s surface

Question 13

Hydrosphere

Answer 13

All water above and below the earth

Question 14

Producer

Answer 14

Able to make its own food through photosynthesis

Question 15

Carnivores

Answer 15

Animal that eats other animals

Question 16

Abiotic

Answer 16

Non-living

Question 17

Biotic

Answer 17

Living

Question 18

Carrying capacity

Answer 18

The maximum population size in an ecosystem

Question 19

Commensalism

Answer 19

A relationship where one organism benefits and the other is neither harmed or benefited

Question 20

Niche

Answer 20

How an organism interacts with its environment

Question 21

Consumer

Answer 21

Must get their energy by eating other organisms

Question 22

Terrestrial

Answer 22

On earth

Question 23

Omnivores

Answer 23

Animal that eats both plants and animals

Question 24

Biosphere

Answer 24

Places in the 3 other spheres where life can exist

Question 25

Decomposers

Answer 25

Consume dead animals/plants and reduce them to simpler forms of matter

Question 26

Parasitism

Answer 26

A relationship where one species is harmed and the other species is benefited

Question 27

Pesticides

Answer 27

Chemicals that are used to control the living organisms through poison or toxicity

Question 28

Sustainability

Answer 28

The ability to maintain balance in an ecosystem

Question 29

Biodiversity

Answer 29

The variety of life in an ecosystem, which is highest around the equator

Question 30

Sustainable ecosystem

Answer 30

Ecosystems that have the ability to maintain balance

Question 31

What causes an ecosystem to not be sustainable?

Answer 31

Its limiting factors, as well as negative human interaction

Question 32

Photosynthesis

Answer 32

The process that allows light energy to be converted into chemical energy

Question 33

True or false: all of the energy on earth comes from plants

Answer 33

False. Energy is harnessed by plants, but the energy itself comes from the sun

Question 34

Where in the producer does photosynthesis happen?

Answer 34

The chlorophyll

Question 35

Limiting factor

Answer 35

Any factor that limits the size of a population

Question 36

True or false: Biotic factors determines where species live

Answer 36

False. It is the abiotic factor

Question 37

A food chain shows...

Answer 37

Simple feeding relationships

Question 38

Give an example of both an abiotic and biotic limiting factor.

Answer 38

For a terrestrial ecosystem, an abiotic limiting factor would be the temperature. A biotic limiting factor would be the producers.

Question 39

How do limiting factors effect the sustainability of an ecosystem?

Answer 39

They effect the sustainability because they control almost everything in the ecosystem, such as...

Question 40

Tolerance range

Answer 40

A specific range of factors that determine if a species can survive if it is in said range.

Question 41

Name 4 ways the humans have decreased the biodiversity in ecosystems

Answer 41

Deforestation Housing and Farming Development Pollution Climate Change

Question 42

Biomass

Answer 42

The total mass of all the species in a trophic level, which decreases as you go up the food chain

Question 43

What percentage of energy carries over each trophic level? Why?

Answer 43

10%, because the rest of the energy is used up by doing daily tasks