Unit 3.1

Question 1

Species

Answer 1

A group of similar organisms which can interbreed produce a fertile offspring

Question 2

What is Biodiversity

Answer 2

The variety of species living in a habitat

Question 3

Population

Answer 3

All the organisms of one species in a habitat

Question 4

Producer

Answer 4

Organisms which produce their own food e.g plants

Question 5

Consumer

Answer 5

Organisms which rely on eating other organisms for food

Question 6

Define a Carnivore

Answer 6

An organism that eats animals

Question 7

Define a Herbivore

Answer 7

An organism that eats plants

Question 8

Define a Omnivore

Answer 8

An organism that eats both plants and animals

Question 9

Define a Predator

Answer 9

An organism that hunts for food

Question 10

Define a prey

Answer 10

An organism which is hunted

Question 11

What is a food chain?

Answer 11

The feeding relationship between a producer and a top consumer

Question 12

What is a food web?

Answer 12

A network of interconnected food chains in a habitat

Question 13

What is an ecosystem?

Answer 13

An ecosystem is all the organisms (community) living in a habitat and the non-living components with which the organisms interact (the abiotic factors)

Question 14

What is a niche?

Answer 14

The role an organism plays within its community

Question 15

A niche describes..

Answer 15

1. The resources the organism uses in an ecosystem (light, nutrient availability)
2. The interaction an organism has in the community (competition, predation)

3.The conditions it can tolerate (temperature)

Question 16

What is interspecific competition?

Answer 16

Interspecific competition is when individuals of different species compete for one or a few of the resources they require

Question 17

What is Intraspecific competition?

Answer 17

When individuals of the same species compete for all the resources they require (more intense)

Question 18

What are the four things that plants compete for?

Answer 18

Light, space, water, mineral ions/soil nutrients

Question 19

What are the three things that animals compete for?

Answer 19

Food, mates, territory

Question 20

Define ‘community’.

Answer 20

A group of interdependent organisms containing different species

Question 21

Secondary consumers may be eaten by…?

Answer 21

Tertiary consumers

Question 22

What are secondary consumers? Give an example.

Answer 22

Animals that eat primary consumers - Any carnivores (eg. lions, foxes, eagles)

Question 23

What are primary consumers? Give an example.

Answer 23

Animals that eat producers - Any herbivores (eg. cows, sheep, rabbits)

Question 24

What is a tertiary consumer?

Answer 24

An organism which eats a secondary consumer