10.0 Biodiversity

Question 1

What are the rules of the binomial naming system?

Answer 1

First name is the genus and is capitalised. Second
name is species and has no capital. If handritten
it should be underlined if typed then in italics

Question 2

What is the purpose of courtship?

Answer 2

Recognise members of the same species. Identify
a mate that is capable of breeding. Form a pair
bond. Synchronise mating and actually become
able to breed

Question 3

What are the three domains?

Answer 3

Archaea, bacteria and eukarya

Question 4

What are the features of the bacteria domain?

Answer 4

No histones, no membrane bound organelles, 70s
ribosomes, cells walls are made of murein
(peptidoglycan).

Question 5

What are the features of the archaea domain?

Answer 5

Genes and protein synthesis more like eukaryotes.
Membranes contain fatty acids joined to glycerol
by ester linkages. If they have a cell wall it
doesn’t contain murein

Question 6

What are the features of the eukarya domain?

Answer 6

Contain membrane bound organelles. Membranes
contain fatty acids joined to glycerol by ester
linkages. If they have a cell wall it doesn’t
contain murein. 80s ribosomes. Histones.

Question 7

What is species richness?

Answer 7

Number of different species in a particular area at
a given time

Question 8

What do you need to calculate an index of diversity?

Answer 8

The total number of organisms of all species and
the total numbe rof organisms of each species.

Question 9

What is species diversity?

Answer 9

Number of different species and the number of
each individuals of each species within any one
community

Question 10

Give examples of how agriculture reduces species diversity

Answer 10

Monoculture.
Removal of hedgerows.
Over
grazing of land.
Use of pesticides.
Absence of crop rotation and intercropping

Question 11

What steps can farmers take to conserve species diversity?

Answer 11

Plant hedges instead of fences.
Maintain existing ponds.
Reduce use of pesticides

Question 12

What are the three ways of measuring genetic diversity?

Answer 12

Compare DNA sequences, RNA sequences and
amino acid sequence

Question 13

How can sampling bias be prevented?

Answer 13

Random sampling

Question 14

How can the effect of chance when sampling be reduced?

Answer 14

Large sample size

Question 15

What does the standard deviation tell you?

Answer 15

Indicates the range of values either side of the
mean

Question 16

What are the three different types of average?

Answer 16

mean, median, range

Question 17

What are the different types of variation?

Answer 17

Continuous and discontinuous

Question 18

What are the different types of graph/chart?

Answer 18

Bar, scatter, line