LE2

Question 1

Abiotic factor definition:

Answer 1

Non living chemical or physical factors which influence an organisms distribution/survival.

Question 2

Biotic factors examples:

Answer 2

-competition
-disease
-food availability
- grazing
-predation

Question 3

Abiotic factors examples:

Answer 3

-light intensity
- pH
-temperature
-moisture

Question 4

How can abiotic factors be measured?

Answer 4

Factors like soil pH, soil moisture and light intensity can be measured using a meter.

Question 5

What is a quadrat used to measure?

Answer 5

Quadrats are used to sample plants and slow-moving animals

Question 6

Biotic factor definition:

Answer 6

Biotic factors are the interactions with other living organisms that influence an organisms distribution and survival.

Question 7

Pitfall traps use:

Answer 7

Pitfall traps are used to sample invertebrates that live on the soil surface or in the leaf litter.

Question 8

What are biological keys?

Answer 8

Biological keys are used to help biologists identify organisms.

Question 9

2 types of biological keys:

Answer 9

-paired statement key
- branched key

Question 10

Indicator species definition:

Answer 10

Indicator species are a species that by their presence or absence indicate environmental quality/levels of pollution.

Question 11

Why are transect lines used?

Answer 11

Transect lines are used to monitor changes in factors over distances.