Competition, Abiotic/biotic Factors

Question 1

What is a population

Answer 1

All the organisms of one species living in a habitat

Question 2

What is a community

Answer 2

The populations of different species living in a habitat

Question 3

What are abiotic factors

Answer 3

Non-living factors of the environment

Eg temperature

Question 4

What are biotic factors

Answer 4

Living factors of the environment eg food

Question 5

What is an ecosystem

Answer 5

The interaction of a community of living organisms with the non-living parts of their environment
(Interaction of a community of biotic factors with the abiotic parts)

Question 6

What do plants need to survive

Answer 6

Light and space

Water and mineral ions from the soil

Question 7

What do animals need to survive

Answer 7

Space (territory)
Food
Water
Mates

Question 8

What is interdependence

Answer 8

In a community each species depends on other species for things

Question 9

What can the interdependence of an ecosystem mean

Answer 9

That any major change in the ecosystem can have far reaching effects

Question 10

What are stable communities

Give examples

Answer 10

When all species and environmental factors are in balance so the population sizes are roughly constant
Tropical rainforest
Ancient oak woodlands

Question 11

Give examples of abiotic factors

Answer 11

Moisture level 
Light intensity 
Temperature 
Co2 level 
Wind intensity 
O2 level 
Soil ph and mineral content

Question 12

What can happen if abiotic factors change

Answer 12

Population sizes are affected
Like if light intensity or temperature change
Then planets I’ll be affected and then the animals that eat the plant could be affected

Question 13

What biotic factors can affect organisms in an ecosystem

Answer 13

New predators arriving
Competition
New pathogens
Availability of food

Question 14

What could a change in biotic factor making a change in population size do

Answer 14

Make a knock on effect because of interdependence

Question 15

What are types of adaptations

Answer 15

Structural > shape or colour
Behavioural eg migrations
Functional > stuff that goes on inside a body like reproduction or metabolism

Question 16

What are structural features of arctic animals

Answer 16

White fur to camouflage and avoid predators

Question 17

What are structural features of animals that live in cold places

Answer 17

Whales have thick layers of blubber

Low surface area to volume ratio to help retain heat

Question 18

What are the structural features of animals that love in hot places

Answer 18

Thin layers of fat

Large surface area to volume ratio to help lose heat

Question 19

What do desert animals do with there functional adaptations

Answer 19

Conserve water by producing very little sweat and small amounts of Urine

Question 20

What does hibernation mean

Answer 20

Animals lower their metabolism in winter to conserve energy so they don’t have to hunt when there’s not much food about

Question 21

What are extremophiles

Answer 21

They’re adapted to live in very extreme conditions

Question 22

What are the parts of a food chain

Answer 22

Producer
Primary consumer
Secondary consumer
Tertiary consumers

Question 23

What do food chains start with and what do they do

Answer 23

Producers that make their own food using energy from the sun

Question 24

What are types of producer

Answer 24

Green plants or algae

Question 25

What is the plants biomass

Answer 25

It’s mass of living material

That it makes from the glucose made from photosynthesis

Question 26

What can biomass be thought of

Answer 26

The energy stored in a plant

Question 27

What is transferred through living organisms in an ecosystem when organisms eat each other

Answer 27

Energy

Question 28

Why are predator prey cycles always out of phase with each other

Answer 28

It takes a while for one population to respond to changes in the other population