B7 - Ecology

Question 1

Ecosystem

Answer 1

The interaction of a community of living organisms with non-living organisms in an environment.

Question 2

Plants compete for…

Answer 2

Light, space and water & minerals

Question 3

Animals compete for…

Answer 3

Mates, food and territory

Question 4

Interdependence

Answer 4

When species rely on one another to survive. If one species is removed from the environment, it can affect the whole community.

Question 5

Stable community

Answer 5

All species and environmental factors are in balance so the population remains fairly constant.

Question 6

What do plants rely on other species for?

Answer 6

Pollination and seed dispersal

Question 7

Abiotic factors

Answer 7

temperature, living intensity, moisture levels, soil pH, mineral content, wind intensity and direction, co2 levels and oxygen levels

Question 8

Biotic factors

Answer 8

Availability of food, new predators, new pathogens, one species outcompeting others

Question 9

Environment

Answer 9

The conditions surrounding and organism; abiotic and biotic

Question 10

Habitat

Answer 10

Place where organisms live eg. woodland, lake

Question 11

Population

Answer 11

Individuals of a species living in a habitat

Question 12

Community

Answer 12

Populations of a different species living in a habitat

Question 13

Factors affecting rate of decay

Answer 13

Temperature, water and oxygen

Question 14

Decomposition

Answer 14

Breakdown of dead organisms which releases mineral ions into the soil

Question 15

Food chain

Answer 15

producer - primary consumer - secondary consumer - tertiary consumer

Question 16

Adaptations

Answer 16

Any characteristics that increase an organisms chance of survival and reproduction eg. thick fur or wider roots

Question 17

Decomposers

Answer 17

Break down dead plants and animal matter by secreting enzymes. Small soluble food molecules then diffuse into the microorganism