Ecology

Question 1

What is interdependence?

Answer 1

Relying on each other for food, shelter,pollination and seed dispersal

Question 2

What is an ecosystem?

Answer 2

All organisms living in a habitat

Question 3

What is a stable community?

Answer 3

All species and environmental factors are in balance so population size remains fairly consistent.

Question 4

List abiotic factors (non-living)

Answer 4

Light intensity, temperature, moisture levels, wind, soil pH

Question 5

List biotic factors (living)

Answer 5

Food availability, new predictors arriving, new pathogens.

Question 6

What are quadrat frames used for?

Answer 6

They are used to estimate population size

Question 7

List the food chain

Answer 7

Producer ——>primary consumer——->secondary consumer——>tertiary consumer

Question 8

How to use quadrat?

Answer 8

1) find random coordinates and place qaudrat on ground
2) count number of individual plants of 1 species in qaudrat.
3) repeat lots
4) calculate mean (number of plants in 1m^2)
5) measure area of whole Habitat* mean plants in 1m^2

Question 9

How does the predator-prey cycle occur?

Answer 9

As prey increases predators increase and as they have more food to eat the number of prey goes down and the number of predictors goes up

Question 10

What is biodiversity?

Answer 10

Variety of all the different species of organisms on the earth