AQA · Biology · 8461
GCSE Biology: Advantages and disadvantages of sexual and asexual reproduction
Inheritance, variation and evolution · AQA GCSE Biology (8461), specification point 4.6.1.3. Cards are generated from the exam board's own specification for "Advantages and disadvantages of sexual and asexual reproduction", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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What is the key advantage of sexual reproduction?
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It produces variation in the offspring.
Why is variation in offspring an advantage if the environment changes?
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Variation gives a survival advantage by natural selection — some individuals are better suited to the new conditions.
How can humans speed up natural selection to increase food production?
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By selective breeding.
How many parents are needed for asexual reproduction?
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Only one.
Why is asexual reproduction more time and energy efficient than sexual reproduction?
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The organism does not need to find a mate.
Which is faster: sexual or asexual reproduction?
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Asexual reproduction.
Under what conditions can asexual reproduction produce many identical offspring?
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When conditions are favourable.
Where do malarial parasites reproduce asexually?
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In the human host.
Where do malarial parasites reproduce sexually?
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In the mosquito.
Many fungi reproduce asexually by ?, but also reproduce sexually to give variation.
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spores
How do strawberry plants reproduce asexually?
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By runners.
How do daffodils reproduce asexually?
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By bulb division.
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