Topic 2 Distribution Of Organisms Flashcards

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1
Q

What is an Abiotic factor ?

A

A non-living factor

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2
Q

What is a Biotic factor ?

A

A living factor

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3
Q

3 examples of abiotic factors :

A

1 : light intensity
2 : moisture
3 : temperature

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4
Q

3 examples of biotic factors:

A

1 : disease
2 : competition
3 : grazing

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5
Q

How to measure light intensity ?

A

With a light meter

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6
Q

Errors with a light meter ?

A

A shadow could be cast
Make sure it’s the same time of day

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7
Q

How to measure moisture?

A

Moisture meter

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8
Q

Errors with a moisture meter ?

A

Could be dap already
Could not have been cleaned

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9
Q

How to measure temperature ?

A

With a thermometer

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10
Q

Errors with a thermometer?

A

Not left long enough

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11
Q

Errors when using a quadrant ?

A

Not thrown randomly
Not enough samples

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12
Q

Errors with a pitfall trap ?

A

Not at ground level
Not camouflaged well

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13
Q

What is an indicator species ?

A

Their presence, abundance or absence indicated the level of pollution in the near environment

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