Life On Earth Flashcards Preview

FRENCH NAT 5 reading booklet/past papers > Life On Earth > Flashcards

Flashcards in Life On Earth Deck (26):
1

What is an ecosystem?

An ecosystem is a natural unit in which organisms can interact in an environment

2

What is a habitat?

Where an organism lives such as a pond,rock pool or soil etc

3

What is a biome?

A geographical region that is characterized by its climate and can contain many ecosystems.

4

Give me any examples of land biomes?

Tundra, savanna, and desert

5

What is a community?

This is the name given to all different populations living in a habitat

6

What is a producer?

A producer is an organism that makes its own food through photosynthesis

7

What is a consumer?

A consumer is an animal that eats the the plant or animal (producer)

8

What is a niche ?

The role an organism has within its ecosystem

9

What does the arrow represent Ina food chain/web?

It represents the energy flow between the producer and consumers

10

How much food is lost through heat and movement, and faeces ?

90%

11

How much food is kept in our bodies when doing exercise and why is this food kept?

10% is kept. This is because we need these left overs for growth and repair

12

What is biodiversity?

Biodiversity is the variety and abundance of species in an ecosystem

13

What is an abiotic factor ?

Abiotic is non living it has to do with sunlight, rainfall, and temperature

14

What is a biotic factor?

Biotic is when living organisms feed off other organisms

15

Biological word for animal ?

Organism

16

What is a population?

Population is the total number of the same species living in a particular habitat

17

What is a pitfall trap?

A pitfall trap is a trapping pit for small animals, such as insects, amphibians and reptiles.

18

What is a quadrat? And what is it used for?

typically of one square metre, selected at random to act as samples for assessing the distribution of plants or animals.

19

What is a quadrat? And what is it used for?

typically one square metre, selected at random to act as samples for assessing the distribution of plants or animals.

20

What is a species?

It's a group of organisms which can interbreed to produce fertile offsprings

21

What are predators and prey?

A predator is an animal that hunts another animal for its food, and prey is the hunted animal

22

What is competition?

Competition is when two or more members of the community need a particular resource that's in short supply.

23

What is intraspecific competition?

This is competition between organisms of the same species. Same species compete more because they need same resources

24

What is interspecific competition?

This is competition between organisms of different species. Different species compete less because they need different resources

25

What's is a light meter?

An instrument for measuring light intensity and moisture in the soil.

26

What are decomposers? give 2 examples

Decomposers are a group of organisms that obtain their energy by breaking down undigested waste, uneaten remains and dead bodies. Examples are Bacteria and Fungi