Unit 1: Life on Earth

Question 1

Habitat

Answer 1

The place where an organism lives

Question 2

Population

Answer 2

All the members of one species living in a habitat

Question 3

Community

Answer 3

All the plants, animals and microorganisms living in a habitat

Question 4

Producer and consumer

Answer 4

Producer- a green plant that uses sunlight to make its own food by photosynthesis
Consumer- an organism that cannot produce its own food, it gains energy but eating other organisms

Question 5

Predator and prey

Answer 5

Predator- an animal which hunts and kills other animals for food
Prey- an animal which is hunted and killed by other animals for food

Question 6

Biodiversity, food chain, food web and ecosystem

Answer 6

Biodiversity- the number, abundance and variety of a species
Food chain- a diagram which shows the transfer of energy between organisms
Food web- a diagram which shows inter-connected food chains
Ecosystem- an ecosystem is made up of all the organisms (the community) living in a particular habitats and the non-living parts with which the organisms interact. Ecosystem= habitat + community

Question 7

What do food chains show, the arrow and what components make them up?

Answer 7

The feeding relationships between organisms
The arrow shows the direction of energy flow
1. Producer (plant)
2. Primary consumer (herbivore)
3. Secondary consumer (omnivore or carnivore)
4. Tertiary consumer (top carnivore)

Question 8

What is a niche and what is predation?

Answer 8

A niche is the role that an organism plays within a community.
Predation is when organisms obtain food by hunting and killing prey organisms