year 10 ecology and genetics Flashcards

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1
Q

what is the theory of natural selection?

A

organisms with an advantage are more likely to breed and pass on variations of genes

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2
Q

what is the theory explained by natural selection?

A

evolution

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3
Q

who developed the theory of evolution?

A

Charles Darwin

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4
Q

what is classification?

A

organising living things into groups

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5
Q

how did Linnaeus classify life?

A

observations of structure and characteristics

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6
Q

what is a species?

A

a group of organisms that can interbreed and produce fertile offspring

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7
Q

what is a binomial name?

A

the scientific name of a species

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8
Q

how did Woses classify life?

A

observations of DNA and biochemistry

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9
Q

what are Woeses six kingdoms of life?

A

animals, plants, fungi, protocista, bacteria, archaea

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10
Q

what are the three domains of life?

A

eukaryota, bacteria, archaea

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11
Q

what is the evolutionary tree?

A

diagram that shows how different species are related

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12
Q

what is the fossil record?

A

fossils arranged in order of time that provides evidence of evolution

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13
Q

Give 3 reasons why the fossil record is incomplete.

A

early life was soft bodied
not all dead organisms form fossils
not all fossils have been found

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14
Q

what is a fossil?

A

preserved remains of an organism

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15
Q

what is mineralisation?

A

the harder parts of organism are replaced by minerals as they decay

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16
Q

what is extinction?

A

the permanent loss of all members of a species

17
Q

what are 3 ways a species can become extinct?

A

new predators
new diseases
competition

18
Q

how many times has climate change caused mass extinction on earth?

A

five

19
Q

what is the decay cycle?

A

how nutrients cycle through the environment

20
Q

what is the water cycle?

A

how water cycles through the environment

21
Q

what are the 5 stages of the water cycle?

A

condensation, precipitation, evaporation, transpiration, respiration

22
Q

what is the carbon cycle?

A

how carbon cycles through the environment

23
Q

how is carbon removed form the atmosphere?

A

photosynthesis

24
Q

how is carbon returned to the atmosphere?

A

decay, respiration and combustion

25
Q

what is the greenhouse effect?

A

when energy from the sun gets trapped in Earths atmosphere by greenhouse gases like CO2

26
Q

what is acid rain?

A

sulfuric acid and nitric acid dissolved in the rain

27
Q

how is the use of land by humans changing?

A

it is increasing because the human population is growing

28
Q

what is the breeding programme?

A

plan to breed rare plants and animals to a sustainable population