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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

5 · The Mitotic Cell Cycle

0/21

6 · Nucleic Acids and Protein Synthesis

0/22

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

9 · Gas Exchange

0/13

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/34

17-18 · Selection, Evolution, Classification and Conservation

0/69

19 · Genetic Technology

0/44
Quiz

17.5 Biodiversity – Check yourself

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Biodiversity AS Biology check yourself quiz: free practice for AS Biology. Work through this Biodiversity AS Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 17.5 Biodiversity — 9700 Notes lesson. More practice: AS Biology — all units. Syllabus: Cambridge AS & A Level Biology 9700 syllabus.

  • Questions count: 12
  • Passing grade: B
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1.

Biodiversity can be assessed at the levels of

species only
ecosystems or habitats, species, and genetic diversity within species
individuals only
kingdoms only
2.

An ecosystem is

a group of organisms of one species
the place where an organism lives
a community of organisms and their abiotic environment interacting
the role of an organism
3.

A niche is

the role of an organism in its ecosystem
where it lives
a group of species
the number of species
4.

Random sampling using quadrats is appropriate when

there is an obvious environmental gradient
organisms are mobile
only one organism is present
the area is fairly uniform
5.

The mark–release–recapture method estimates

species richness
percentage cover
plant density
the population size of mobile animals
6.

40 snails are marked and released. Later 50 are caught, of which 10 are marked. The estimated population is

500
80
200
2000
7.

Simpson’s index of diversity has a high value (near 1) when

one species dominates
there are many species with similar abundance
there are few species
the community is unstable
8.

Spearman’s rank correlation is used to test for

a correlation between two sets of ranked data
a difference between two means
a difference between observed and expected numbers
species diversity
9.

Species richness is

the number of individuals
the evenness of abundance
the genetic diversity
the number of different species in an area
10.

A belt transect records

only organisms touching a line
organisms at random points
the species present in quadrats placed along a line
animals caught in traps
11.
To measure genetic diversity in a population, scientists would best compare _____.
the number of habitats
DNA sequences or alleles among individuals
the number of species
the size of the area
12.
The graph shows genetic diversity in two isolated populations. What does it show?
Dr Dabour Hub Academy - figure 1
Both lose diversity equally
Large populations lose diversity faster
The small population loses genetic diversity much faster
Diversity increases in small populations
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Part of 17-18 · Selection, Evolution, Classification and Conservation — see every lesson and quiz in this unit.
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