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A LEVEL ENVIRONMENTAL SCIENCE: Conservation of Biodiversity Exam 2024 Review
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A LEVEL ENVIRONMENTAL SCIENCE: Conservation of Biodiversity Exam 2024 Review
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A LEVEL ENVIRONMENTAL SCIENCE:Conservation of Biodiversity Exam 2024
Review
ecology - Answer>> the study of the relationship between living
things and between living things and their environment
environment - Answer>> refers to an area and the conditions in
which an organism lives.
rationale for wildlife conservation - Answer>> - food.
- education.
- recreating.
- morale.
- gene pool/genetic diversity.
- ethics.
- medical services.
- materials.
plants with commercial cultivation potential - Answer>> - potato
bean of north America (protein source).
- moramo bean of south Africa (protein source & drought
resistant).
- yeheb tree of Somalia (drought resistant & grows in poor
conditions).
biomimetics - Answer>> use of knowledge of adaptations of
other species to improve design of manufactured items, e.g. bird
wings for planes, spiderwebs for airbag material.
plants used for medicine - Answer>> - poppies cultivated for
painkillers.
- cinchona tree used to produce quinine.
,- willow tree bark used to make aspirin
advantages of animal testing - Answer>> - prevents loss of a
more intelligent life form (humans).
disadvantages of animal testing - Answer>> - expensive to
keep animals.
- products will have different impacts on animals than they will on
humans.
ethical issues with animal testing - Answer>> - limit to how
much pain can be inflicted on animals.
- have to avoid specific 'sacred' animals.
moral issues with animal testing - Answer>> - animals can feel
pain.
- can't allow a person to die so that an animal doesn't.
- animals have no way to consent.
biological pest control - Answer>> - method of controlling pests
such as insects.
- relies on predation, parasitism, herbivory, but also involves
human activity.
biological control agents - Answer>> predators = ladybirds,
aphids.
parasites = lay eggs in or on host
pathogens = bacteria, fungi, viruses
gene pool - Answer>> - total variety of genes in all members of
a population.
- domestic species are often inbred.
- less able to adapt.
, - reduces extinction.
vavilov centres - Answer>> where crops were first
domesticated and wild varieties are still found.
centre of origin - Answer>> geographical area where a group of
organisms, either domesticated or wild, first developed its
distinctive properties.
characteristics introduced from crop wild relative species (CWR) -
Answer>> - disease resistance.
- salt-tolerance.
- resistance to drought.
- high yield.
- improved taste or appearance.
- nutrient uptake.
gene pool problems - Answer>> - a large population does not
always guarantee a large gene pool.
- domestic species are often produced from a very small number
of original ancestors.
autotrophs - Answer>> plants are autotrophs because they
produce their own food from light.
nutrient cycle - Answer>> a nutrient cycle is the movement and
exchange of organic and inorganic matter back into the
production of living matter.
species interdependence - Answer>> living organisms provide
services that aid the survival of other species.
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