Ecosystems

Question 1

Habitat

Answer 1

The place where an organism lives

Question 2

Population

Answer 2

A group of organisms of the same species

Question 3

Community

Answer 3

The total sum of all the living organisms in an area. All animals and plants living in an area

Question 4

Ecosystem

Answer 4

The community living in a particular habitat and the non-living components with which the organisms interact

Question 5

Niche

Answer 5

The role of an organism within the food chain

Question 6

What are biotic factors

Answer 6

Hm……….

Factors relation to living things e.g. Predation

Question 7

What are abiotic factors

Answer 7

Factors relation to non-living things e.g. Weather

Question 8

Name 4 abiotic factors

Answer 8

pH
Light intensity
Temperature
Rainfall

Question 9

Name 4 Biotic factors

Answer 9

Predation
Competition
Food availability
Disease

Question 10

Why are green plants called producers

Answer 10

The make their own food

Question 11

What are consumers

Answer 11

Non-green plants and animals that obtain their food through eating other organisms

Question 12

Herbivore

Answer 12

Only eats plants

Question 13

Carnivore

Answer 13

Only eats meat

Question 14

Omnivore

Answer 14

Eats meat and plants

Question 15

Predator

Answer 15

Hunts and kills animals for food

Question 16

Prey

Answer 16

Killed by predator

Question 17

Decomposer

Answer 17

Bacteria/Fungi that break down dead plants/animals releasing nutrients back into the soil

Question 18

What is biodiversity

Answer 18

The number of different organisms in a particular habitat

Question 19

Why is biodiversity important

Answer 19

Because each organism has an important role to play and they rely on eachother to survive which means there is a wider food source available.

Question 20

Dercribe an abiotic factor test (pH)

Answer 20

A pH test is when a soil sample is ground up and placed into a solution of universal indicator. The colour of that solution tells us the pH of it when we look at the chart

Question 21

Describe a biotic factor test (pitfall trap)

Answer 21

A pitfall trap is used to sample small invertibrates living in leaf litter. First dig out a hole to fit cup and make sure there are no gaps. Balance a leaf or stone over the top and wait for a small insect to come by and fall into the trap.

Question 22

What do the arrows show on a food chain

Answer 22

The direction of the energy flow

Question 23

Name 2 rules about a food chain

Answer 23

The producers are always at the start and the sun is a source of energy for all food chains

Question 24

What’s a food web

Answer 24

A complex interaction of several food chains

Question 25

What are adaptations

Answer 25

Characteristics which make an organism suited to the environment it lives in

Question 26

What are 4 types of adaptations

Answer 26

Physiological Structural Bahavioural Behaviour

Question 27

What is physiological adaptation

Answer 27

Adaptations inside the organism

Question 28

What is structural adaptation

Answer 28

Physical features of the organism (shape, body, covering)

Question 29

What is behavioural adaptation

Answer 29

Changes the way an animal behaves

Question 30

What is behaviour adaptation

Answer 30

It can be split into two categories, innate and learned

Question 31

What is innate behaviour

Answer 31

Something an organism already knows how to do without having to learn like sucking, crying or migrating

Question 32

What is learned behaviour

Answer 32

Something an organism has to learn to do like swimming or walking

Question 33

What is competition

Answer 33

When animals compete for the same resources and are in short supply

Question 34

What would Green plants compete for

Answer 34

Soil nutrients, water and light

Question 35

What would animals compete for

Answer 35

Shelter, water, mates and food

Question 36

What is interspecific competition

Answer 36

When members of different species compete for the same resources and have the same niche in their food chain

Question 37

What is intra specific competition

Answer 37

Competition between members of the same species

Question 38

Why is intra specific competition more competitive

Answer 38

As the same species they need the same resources, its more intense, weaker individuals die and its leads to territorial behaviour

Question 39

Why is nitrogen essential for plants and animals

Answer 39

It's the building block of proteins

Question 40

Where do plants get nitrogen from

Answer 40

The soil

Question 41

What is nitrogen in the form of in soil

Answer 41

Nitrates

Question 42

Why do farmers add fertiliser to plants

Answer 42

It contains nitrogen and other nutrients to help them grow

Question 43

What do fertilisers contain apart from nitrates

Answer 43

Magnesium and potassium

Question 44

Apart from man made fertilisers what can farmers use

Answer 44

Natural fertilisers like dung

Question 45

What can happen to fertiliser when it's near a river or pond

Answer 45

It's can get washed into the river which causes algae to grow on the surface (algal blooms)

Question 46

Why is it bad to have algae on the surface of water

Answer 46

It kills all the plants underneath as it blocks the light

Question 47

What happens to the dead plants in the water

Answer 47

They get eaten by decomposers (bacteria)

Question 48

What do bacteria use a lot of

Answer 48

Oxygen

Question 49

Why is it bad that bacteria eat the dead plants

Answer 49

They eat the oxygen and kill all the animals

Question 50

Overall why is it bad for fertiliser to be washed into rivers

Answer 50

Biodiversity decreases

Question 51

What happens when there's dead plants

Answer 51

Bacteria multiply

Question 52

What affects biodiversity

Answer 52

Deforestation Fertiliser in water Natural disasters Pollution