Curriculum
Course: AQA A Level Biology 7402
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Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

4.6.2 Species Richness – Exam questions

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  • Questions count: 7
  • Passing grade: B+
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1.
Which statement best describes Species richness?
The variety of life — measured at three levels: genetic, species and ecosystem.
Found naturally in one place and nowhere else — the most vulnerable to extinction.
How many different species are present.
How equally individuals are spread among those species.
2.
Using the table, how do the species richness values of the two meadows compare?
Meadow 1 is richer
Meadow 2 is richer
Richness cannot be found
They are equal — 4 species each
3.
Students compare species richness in a mown lawn and a wild meadow using quadrats. What is the dependent variable?
Type of area
Quadrat size
Number of plant species
Time of sampling
4.
What does the index of diversity take into account that species richness does not?
The number of habitats
The abundance of each species
The genetic diversity of each species
The size of the quadrat
5.

Species richness is

the number of individuals
the evenness of abundance
the genetic diversity
the number of different species in an area
6.

The index of diversity is more useful than species richness because it

also takes into account the abundance of each species
counts only plants
ignores rare species
is easier to measure
7.
Two communities with the same species richness must have the same biodiversity. True or false?
True
True if in one biome
True if equal area
False
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Part of 4. Genetics, Variation and Interdependence — see every lesson and quiz in this unit.
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