KA1- Ecosystems

Question 1

Species

Answer 1

Organisms with similar characteristics and with the ability to interbreed to produce fertile offspring

Question 2

Biodiversity

Answer 2

The variety of plants and animals which exist in an area

Question 3

Population

Answer 3

A group of organisms of the same species

Question 4

Ecosystem

Answer 4

Consists of all the living organisms in a particular area and the non living components with which they interact with

Question 5

Habitat

Answer 5

Where an organism lives

Question 6

Niche

Answer 6

The role an organism playa within an ecosystem and the different interactions organisms can have within an ecosytem

Question 7

Producer

Answer 7

An organism that produces its own food by photosynthess

Question 8

Consumer

Answer 8

An organism that obtains energy by consuming an organism

Question 9

Herbivore

Answer 9

An organism that only eat plants

Question 10

Carnivore

Answer 10

An organism that only eats animals

Question 11

Omnivore

Answer 11

An organism that eats both plants and animals

Question 12

Predator

Answer 12

An organism that obtains food by hunting and killing organisms

Question 13

Prey

Answer 13

Obtained and killed by predator organisms

Question 14

Food chain

Answer 14

Show energy flow by showing feeding relationships
They show which organisms eat other organisms

Question 15

Food web

Answer 15

Many food webs linked together
Food chains that interconnect at various points

Question 16

Competition

Answer 16

Occurs when organisms need the same resources to survive and the resource is in short supply
Two different types of competition:
Interspecific competition- occurs between individuals of different species
Intraspecific competition- occurs between individuals of the same species
Intraspecific competition is usually more intense than interspecific competition because the individuals have the same niche so are competing for exactly the same resources, e.male deer locking horns for mates

Question 17

Parasitism

Answer 17

An interaction where on individual benefits and the other loses out, e.g flea feeding on dog blood

Question 18

Explain the relationship between the population of prey and predators

Answer 18

As the population of the prey increases, the predator population also increases and then the prey decreases and so do the predators, meanwhile the pretty population increase again and the cycle repeats

Question 19

What does the arrow in a food chain show?

Answer 19

The transfer of energy from one organism to the next

Question 20

What do all food chains start with?

Answer 20

A producer (green plants)

Question 21

How do green plants make their own food?

Answer 21

By converting light energy into chemical energy through photosynthesis

Question 22

What is the source of all energy in a food chain?

Answer 22

The sun

Question 23

How are food chains upsetted?

Answer 23

Removing an organism because other organisms would be affected