B14a Organisation of Ecosystems

Question 1

Plants are producers. What does this mean?

Answer 1

They make food by photosynthesis.

Question 2

What do all food chains start with?

Answer 2

Producer
Plant or algae
Make glucose by photosynthesis

Question 3

Name the group of organisms that eat the producers

Answer 3

Primary consumers

Question 4

Name the group of organisms that eat primary consumers

Answer 4

Secondary consumers

Question 5

Name the producer on this food chain

Answer 5

Algae

Question 6

What is a tertiary consumer?

Answer 6

Eats a secondary consumer

Question 7

What is a predator?

Answer 7

Kill and eat other animals

Question 8

What is the name given to an organism eaten by a predator?

Answer 8

Prey

Question 9

Describe the pattern of predators and prey in a stable community

Answer 9

The numbers of predators and prey rise and fall in cycles

Question 10

What do food chains show?

Answer 10

Feeding relationships of different organisms
and the flow of energy between them

Question 11

Name the primary consumer shown on this food chain

Answer 11

Flies

Question 12

Name the prey of the snake

Answer 12

Frog

Question 13

Name the secondary consumer shown on this food chain

Answer 13

Frog

Question 14

Define biomass

Answer 14

Total mass of all the living material

Question 15

What do the arrows show in a food chain?

Answer 15

Movement of energy or biomass

Question 16

What pieces of apparatus is used to measure the number or distribution of organisms in an area?

Answer 16

Quadrat

Question 17

How is a mean number of organisms in a population calculated?

Answer 17

Add together the number of organisms found in each quadrat. Divide by the number of quadrats used

Question 18

When considering the abundance of different organisms what is meant by the term mode?

Answer 18

The organism present in the greatest numbers

Question 19

Which organism is feeding as a secondary consumer?

Answer 19

Fish

Question 20

When considering the abundance of different organisms what is meant by the term median?

Answer 20

The organism that represent the middle value when the numbers are arranged from lowest to highest.

Question 21

The diagram shows the carbon cycle. Name the process labelled A

Answer 21

Photosynthesis

Question 22

The diagram shows the carbon cycle. name the process labelled B

Answer 22

Respiration

Question 23

Describe the carbon cycle

Answer 23

Plant change carbon dioxide into organic materials in photosynthesis

Organic material passes along the food chain

Carbon dioxide is released by into the atmosphere by respiration from plants and animals

Decomposers convert dead material into carbon dioxide

Burning fuel also releases carbon dioxide into the atmosphere

Question 24

Name the process labelled C on the diagram of the carbon cycle

Answer 24

Combustion (burning)

Question 25

Describe the water cycle

Answer 25

Water from lakes and oceans evaporates
Evaporated water condense to form clouds
Precipitation (Rain)

Infiltration

Peculation to form ground water

Water absorbed by plants and is lost by transpiration

Water runs off into rivers and oceans

Question 26

The diagram show the water cycle. Name the process labelled A

Answer 26

Run off

Question 27

The diagram show the water cycle. Name the process labelled B

Answer 27

Precipitation (rain)

Question 28

The diagram show the water cycle. Name the process labelled C

Answer 28

Evaporation

Question 29

The diagram shows the water cycle. Name the process labelled 1

Answer 29

Transpiration

Question 30

Name the secondary consumer on this food chain

Answer 30

Lion

Question 31

What do the arrows show on this diagram

Answer 31

Movement of energy or biomass