Biology 2

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What's the order of classification?
Kingdom-Phylum - Class - Order - Family - Genus - Species
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What's the definition of a species?
A group of organisms which can interbreed to produce offspring.
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What is asexual reproduction?
An organism reproducing itself by making a copy - like bacteria
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What is a hybrid?
A hybrid is when you interbreed to organisms from different species to produce offspring called hybrids. They are usually infertile so they cannot create a new species.
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What is interspecific competition?
Organisims competing against other species
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What is intraspecific competition?
Organisms competing against the same species
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What is a specialist?
Organisms that are highly-adapted to a specific habitat.
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What is a generalist?
Organisms that are adapted to survive in a range of different habitats.
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How do animals adapt to cold environments?
Thick coats/blubber, large size, counter-current heat exchange systems & behavioural adaptations
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How do animals adapt to hot environments?
Reducing heat gain & increasing heat loss.
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How have plants adapted to deserts?
Rounded shapes, waxy layer, storing water in stems & having shallow roots.
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How have animals adapted to deserts?
Specialised kidneys that concentrate urine, not having sweat glands & spending lots of time underground.
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How does reproductive isolation get caused?
Geographic isolation - physical barriers separating species
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Why was Darwin's theory of evolution not accepted?
It conflicted with religious belief, Darwin couldn't properly explain it & scientists didn't have enough evidence to accept it
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What is the carbon cycle & how is it 'powered'?
It shows how carbon is recycled & is powered by photosynthesis.
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What 4 types of bacteria are involved in the nitrogen cycle?
Decomposers, nitrifying, nitrogen-fixing & denitrifying
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What 3 things is pollution causing?
Global warming, Acid rain & Ozone depletion
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How can pollution be measured naturally?
Certain species only dwell in areas that have certain amounts of pollution.
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How do species become endangered?
Habitat, individual & genetic problems
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How can you evaluate conservation programmes?
Genetic variation, variety of population, available habitats & interaction between species.
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How can conservation programmes help humans?
Protecting food supplies, ensuring minimal damage to food chains, providing medicines & cultural aspects
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What does sustainable development mean?
Providing for the needs of the increasing population without harming the environment
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Card 2


What's the definition of a species?


A group of organisms which can interbreed to produce offspring.

Card 3


What is asexual reproduction?


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Card 4


What is a hybrid?


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Card 5


What is interspecific competition?


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