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3.4 Genetics, biodiversity and classification
exam questions mistakes
4. species + taxonomy
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Cards (9)
"3 ways in which courtship behaviour increases the probability of successful mating"
allows organism to
recognise
same
species
formation of a
pair
bond
indicates
fertility
"Give 2 differences in the variation in body length of male and female thorny lizards"
females
are generally
longer
(up to 115m)
females
show a greater
variation
/ range
"explain why fewer species of plant would lead to fewer species of lizard in the oil palm plantation"
fewer
habitats
fewer
insect
species
so fewer
food
sources
"suggest an explanation for the relationship between the concentration of herbicide and the mean crop yield"
as concentration of herbicide increases more
weeds
are killed so more
crops
/
higher
yield
but
high
concentrations of the herbicide
damage
the crops
complete table:
A)
Kingdom
B)
Phylum
C)
class
D)
order
E)
family
F)
luscinia
G)
svecica
7
"what is meant by genetic diversity?"
number of different
alleles
of each
gene
"what is the difference between species richness and index of diversity?"
Species richness is a
measure
of the number of
different
species
in a
community.
An index of diversity describes the
relationship
between the number of
species
in a community and the number of
individuals
in each species.
Explain why it may be more useful to calculate the index of diversity than to record the species richness
Measures number of
individuals
(of each species) and number of species
Some species only present in small numbers
a sampling procedure could be
standardised
by using the same sample
size
of an area