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Biodiversity and populations — Question 4

QCAA 2020, Paper 1 · 1 mark

Q4 · 2020 · Paper 1Unclassified1 mark

QUESTION 4

The following information includes:

• a key that is used to classify the types of alpine and subalpine grassland habitats

• a table of abiotic and biotic data obtained from a habitat survey.

Biology question figure

Habitat classification

Moss-and-lichen-

Moss-and-lichen-dominated?

Yes

N

dominated mountain summit

Nutrient-rich soil?

Yes

Biology question figure

Abiotic physical parameter

Reading

Reference range for nutrient-poor soil (mg/kg)

pH

6.1

Nitrates/nitrites (mg/kg)

4

< 5

Ammonia (mg/kg)

1

< 4

Total phosphorous

16

< 20

Biotic description: Small amount of low-lying moss, growing on soil substrate. Predominantly low-lying grasses.

Using the data in the table and the key, this alpine and subalpine grassland would be classified as

(A) a moss-and-lichen-dominated mountain summit.

(B) an alpine and subalpine nutrient-enriched grassland.

(C) a calcareous alpine and subalpine grassland.

(D) an acidic alpine and subalpine grassland.

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