N5 3.2 Distribution of Organisms Flashcards

Front

Biotic factor

Back

A living factor within an ecosystem

Front

Examples of a biotic factors

Back

Competition

Disease

Predation

Grazing

Food availability

Front

Abiotic factor

Back

A non-living factor in an ecosystem

Front

Examples of abiotic factors

Back

Temperature

pH

Light intensity

Soil moisture

Front

When using a light meter to measure light intensity, how can you minimise errors?

Back

avoid casting a shadow over the light-sensitive panel.

take measurements at the same time of day.

Front

Moisture meter

Back

used to measure soil moisture

Front

How can you minimise sources of error when using a moisture meter for measuring soil moisture?

Back

By wiping the probe after each measurement

Front

What is the purpose of wiping the probe of a pH meter after each measurement?

Back

To remove moisture that could cause errors

Front

How can you minimise sources of error when using a thermometer for measuring soil temperature?

Back

1. Leave time to adjust before taking reading.

2. Insert into same soil depth each time.

Front

What is the name of this apparatus?

Back

Quadrat