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B2 Revision cards
B2 Revision Ques1ons Part 2
B2 Revision cards
Ques1on 1
• Name 2 adapta1ons of predators
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Answer 1
• Hun1ng skills, eyes in front of head, synchronous breeding
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Ques1on 2
• Name 2 adapta1ons of prey
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Answer 2
• Eyes on either side of their head, travel in herds/ groups, can move fast
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Ques1on 3
• What is adapta1on?
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Answer 3
• Changes in the body to fit the environment of the organism
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Ques1on 4
• What does ex1nct mean?
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Answer 4
• When all member of a species have died out
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Ques1on 5
• What is hiberna1on? Why do some animals do this?
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Answer 5
• Where an animals’ ac1vity is lowered due to a lack of food and change in weather condi1ons
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Ques1on 6
• What is migra1on? Why do some animals do this?
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Answer 6
• Where animals travel long distances due to a change in environmental condi1ons (heat, food, water)
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Ques1on 7
• What is meant by counter current heat exchange system?
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Answer 7
• Warm blood in one blood vessel passes the cold blood in another and transfers heat, reducing heat loss
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Ques1on 8
• How do animals adapt by hiberna1ng?
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Answer 8
• Lowering their metabolic rate
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Ques1on 9
• What is an extremophile?
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Answer 9
• Organisms that can live in extreme condi1ons (high temperature/ pressure)
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Ques1on 10
• What is a specialist organism?
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Answer 10
• Suited to only one type of habitat
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Ques1on 11
• What is a generalist organism?
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Answer 11
• Can survive in different condi1ons
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Ques1on 12
• Name 4 ways that camels are adapted to their environment
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Answer 12
• Hump with fat, long eye lashes, wide feet, thick fur, nose that can close, strong legs, tough lips
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Ques1on 13
• Do you want a high or low surface area: volume ra1o if you want to lose more heat?
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Answer 13
• High
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Ques1on 14
• Name 3 ways that fish are adapted
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Answer 14
• Steam-‐lined, travels in groups, eyes on side of head
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Ques1on 15
• What is evolu1on?
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Answer 15
• The gradual change in organisms over millions of years caused by muta1ons and natural selec1on
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Ques1on 16
• What two things could happen to organisms if an environment changes?
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Answer 16
• Evolve or die out (become ex1nct)
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Ques1on 17
• Who’s theory of evolu1on is more widely accepted?
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Answer 17
• Darwin’s
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Ques1on 18
• What is natural selec1on?
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Answer 18
• Process where ‘good’ characteris1cs are passed on in genes to become more common
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Ques1on 19
• What are adapta1ons controlled by?
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Answer 19
• Genes
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Ques1on 20
• Give 2 reasons why the theory of natural selec1on is now widely selected
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Answer 20
• We know more about inheritance and DNA
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Ques1on 21
• What is meant by the survival of the fi`est?
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Answer 21
• Organisms with the right characteris1cs will survive. If they don’t have them they will
become ex1nct
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Ques1on 22
• Why do animals produce more young than necessary
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Answer 22
• More chance of survival and passing on their genes
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Ques1on 23
• Why did people disagree with Darwin’s theory of evolu1on to begin with?
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Answer 23
• Contradicted God, not enough evidence, people didn’t believe we evolved from apes
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Ques1on 24
• What is Darwin’s theory of evolu1on?
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Answer 24
• Organisms evolve by natural selec1on
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Ques1on 25
• What are the 4 factors in Darwin’s theory natural selec1on?
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Answer 25
• There is compe11on in limited resources, organisms produce more young than will survive, within a species there is natural varia1on, those that survive pass on their successful adapta1ons
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Ques1on 26
• Give 5 reasons why organisms may be come ex1nct or endangered
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Answer 26
• Climate change, habitat destruc1on, hun1ng, pollu1on, compe11on
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Ques1on 27
• State 6 ways for how endangered species can be conserved
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Answer 27
• Protec1ng habitats, legal protec1on, educa1on and cap1ve breeding programmes, seed banks, crea1ng ar1ficial ecosystems
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Ques1on 28
• What resources can be maintained?
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Answer 28
• Fish stocks and woodland
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Ques1on 29
• What is specia1on?
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Answer 29
• Where a new species is made due to natural selec1on in geographic or reproduc1ve
isola1on
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Ques1on 30
• What are the 2 factors required for specia1on?
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Answer 30
• Geographic and reproduc1ve isola1on (without breeding within popula1ons)
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Ques1on 31
• Give 4 reasons why we have conserva1on programmes
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Answer 31
• Protect human food supply, ensuring minimal damage to food chains, cultural aspects, future iden1fica1on of plants for medicine
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Ques1on 32
• What is Lamarck’s theory of acquired characteris1cs?
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Answer 32
• That animals acquired characteris1cs they needed
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Ques1on 33
• Why was Lamarck’s theory discredited?
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Answer 33
• As we found genes pass on characteris1cs
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Ques1on 34
• What has the theory of natural selec1on become more developed over the years?
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Answer 34
• Understanding of genes and DNA
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Ques1on 35
• Why did the pepper moth evolve?
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Answer 35
• Pollu1on changed the colour of tree bark-‐ moths with light colour were more easily
spo`ed and eaten
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Ques1on 36
• What is happening to the size of the human popula1on?
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Answer 36
• It is increasing exponen1ally
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Ques1on 37
• What does finite mean? Which 2 resources are finite?
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Answer 37
• It is running out. Minerals and fossil fuels
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Ques1on 38
• What happens to the amount of pollu1on as the popula1on increases?
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Answer 38
• It increases
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Ques1on 39
• What are 4 ways that humans make pollu1on?
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Answer 39
• Household waste, sewage, sulphur dioxide and carbon dioxide in burning fossil fuels
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Ques1on 40
• Why is the popula1on growing?
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Answer 40
• Birth ra1ng is greater than death rate
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Ques1on 41
• What is acid rain?
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Answer 41
• Rain water, which is made more acidic by pollutant gases
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Ques1on 42
• What is ozone deple1on?
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Answer 42
• Where the ozone layer is depleted due to gases (CFC’s)
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Ques1on 43
• What species can indicate water pollu1on if they are present?
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Answer 43
• Waterlouse, sludgeworm, rat-‐tailed maggot, mayfly larvae
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Ques1on 44
• What species can indicate air pollu1on if they are present?
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Answer 44
• Lichen
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Ques1on 45
• Describe 2 ways that pollu1on can be measured
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Answer 45
• Direct measurement of pollutant levels and measuring the occurrence of indicator species
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Ques1on 46
• Which countries have a greater impact on the use of resources and crea1on of pollu1on?
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Answer 46
• More developed countries
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Ques1on 47
• What is meant by a carbon footprint?
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Answer 47
• The total amount of greenhouse gases given off by a person in a given 1me
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Ques1on 48
• What are the possible consequences of exponen1al growth?
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Answer 48
• More gases released, more waste, more food and fuel needed, more sewage
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Ques1on 49
• What is an advantage of using a living method to measure pollu1on?
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Answer 49
• Cheap and easy-‐ no high tech equipment needed
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Ques1on 50
• What is an disadvantage of using a living method to measure pollu1on?
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Answer 50
• Can affect wildlife/ damage environment
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