Ecosystems and Energy in Ecosystems

Question 1

Define biodiversity

Answer 1

The variety of living things on earth

Question 2

Define species

Answer 2

Group of organisms that can interbreed to produce fertile offspring

Question 3

Define population

Answer 3

All the members of one species

Question 4

Define niche

Answer 4

The role that an organism plays within a community

Question 5

Define ecosystem

Answer 5

All the organisms in an area and their habitat

Question 6

Define community

Answer 6

All the organisms in an ecosystem

Question 7

Define producer

Answer 7

Makes its own food through photosynthesis

Question 8

Define consumer

Answer 8

Obtains energy by eating another organism

Question 9

Define herbivore

Answer 9

Eats only plant material

Question 10

Define omnivore

Answer 10

Eats both plant and animal material

Question 11

Define carnivore

Answer 11

Eats only animal material

Question 12

Define intraspecific

Answer 12

Competition occurs between members of the same species

Question 13

Define interspecific

Answer 13

Competition occurs between members of different species

Question 14

What do the arrows show in a food chain?

Answer 14

The direction of energy flow

Question 15

How is energy lost from a food chain/web?

Answer 15

Used for movement, used for heat and food is undigested and expelled in faeces

Question 16

What does a pyramid of energy show?

Answer 16

The total quantity of available energy stored in the biomass of organisms at each level of the food chain

Question 17

What does a pyramid of numbers show?

Answer 17

The total number of individual organisms at each level of the food chain

Question 18

Why might a pyramid of numbers be irregular?

Answer 18

Because it does not take the biomass of the organisms into account