Chapter 10 - Biodiversity Flashcards

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1
Q

define a species

A

members are able to produce living, fertile offspring

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2
Q

what is the binomial system

A

a universal system of naming species based upon latin or greek names

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3
Q

what does the generic name denote?

A

the genus

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4
Q

what does the specific name denote?

A

the species

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5
Q

how are the generic and specific names written?

A

capital letter for generic name but lower case for specific

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6
Q

outline the ways in which courtship behaviour helps ensure the maximum chance of survival

A
  • recognise members of their own species
  • identify a mate that is capable of breeding
  • form a pair bond
  • synchronise mating
  • become able to breed
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7
Q

what is taxonomy

A

the practical classification in biology

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8
Q

what is artificial classification

A

divides organisms by visual differences and not on evolutionary origin

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9
Q

what is phylogenetic classification

A

classification based upon evolutionary relationships, arranging animals into groups using shared features derived from common ancestors

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10
Q

give the full list of taxons

A
kingdom
phylum
class
order
family
genus
species
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11
Q

describe the features of the bacteria domain

A

group of single celled prokaryotes

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12
Q

describe the features of the Archaea domain

A

group of single celled prokaryotes which are more similar to eukaryotes

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13
Q

describe the features of the Eukarya domain

A

a group of organisms made up of one or more eukaryotic cells

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14
Q

what is phylogeny

A

the hierarchical order of taxonomic ranks based upon the supposed evolutionary line of descent of the group members

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15
Q

what is species diversity

A

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

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16
Q

what is genetic diversity

A

the variety of genes possessed by the individuals that make up a population of a species

17
Q

what is ecosystem diversity

A

the range of different habitats from a small local habitat to the whole of the earth

18
Q

give 4 examples of farming practices directly reducing habitats

A
  • removal of hedgerows and woods
  • creating monocultures
  • draining or filling in wetlands and ponds
  • over-grazing of land
19
Q

give 3 examples of farming practices that have a more indirect effect on habitats

A
  • use of pesticides and inorganic fertilisers
  • escape of effluent from storage
  • absence of crop rotation
20
Q

give 5 examples of conservation techniques which could be used in farming

A
  • maintain hedgerows
  • plant hedges
  • maintain ponds and wetlands
  • plant native tress
  • reduce the use of pesticides
  • use organic fertilisers
  • use crop rotation that includes nitrogen fixing crops
  • use intercropping
  • create natural meadows
  • cut verges after flowering of plants
  • introduce conservation headlands
21
Q

give 2 limitations of using observable characteristics to measure genetic diversity

A
  • polygenic characteristics

- environmental effects on characteristics (phenotype)

22
Q

how is DNA comparison more accurate?

A

highly technical, almost entirely computerised

23
Q

how can mRNA and amino acid sequences be used for genetic comparison?

A
  • mRNA complimentary to DNA

- amino acids coded for by DNA

24
Q

what is random sampling?

A

sampling individuals at random in the hopes of this random sample being representative

25
Q

what is sampling bias?

A

unwittingly taking samples that are bias

26
Q

what is chance?

A

the possibility that the selected random sample are not representative

27
Q

why is it important to have a large sample size?

A

reduces the probability that chance will influence the result

28
Q

why should statistical tests be used on sets of raw data?

A

to determine the extent to which chance may have influenced the result