Lesson T4.2.3
T4.2.3 Natural selection and competition Quiz: KS3 Biology, Unit 4
20 questions
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Lesson T4.2.3, Natural selection and competition: 20 multiple choice questions for the KS3 Biology (National Curriculum), Unit 4: Genetics and evolution, written with Revision Ninja.
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The 20 questions
-
What is the key mechanism of natural selection?
- Differential survival
- Direct adaptation
- Random mutation
- Environmental cloning
-
What helps some organisms compete more successfully than others?
- Smaller size
- Advantageous variations
- Fewer defences
- Weaker muscles
-
Which of these is a key resource for plant competition?
- Light
- Oxygen
- Prey
- Mates
-
What happens to advantageous genes over generations in evolution?
- Become more common
- Remain completely constant
- Turn into mutations
- Disappear entirely
-
Why might a specialised beak give a bird a survival advantage?
- Accessing specific food
- Attracting fewer predators
- Needing less oxygen
- Flying much faster
-
In polluted woods, what typically happens to dark-form moths?
- Numbers decrease
- Become extinct
- Numbers increase
- Stop reproducing
-
What is the typical fate of poorly adapted competitors?
- Rapid evolution
- Immediate migration
- Lower reproduction
- Instant mutation
-
Which factor drives natural selection directly?
- Conscious choice
- Intentional breeding
- Physical need
- Selective advantage
-
What must exist within a population for natural selection to occur?
- Cloning
- Identical genes
- Uniformity
- Variation
-
What environmental change can reduce an organism's adaptation success?
- New predators
- More abundant food
- Higher oxygen
- Increased shelter
-
What acts as the selective pressure in natural selection?
- Mutation rate
- Population size
- The environment
- Genetic drift
-
Why might a rabbit population become faster over generations?
- Growing longer legs
- Eating more food
- Training every day
- Passing on genes
-
Which scenario shows competition between two organisms?
- Plants sharing light
- Bee pollinating flower
- Barnacle on whale
- Bird eating worm
-
Why do organisms compete for mates?
- To reduce stress
- To share food
- To find shelter
- To pass genes
-
What term describes a feature that helps survival in a habitat?
- Selection
- Mutation
- Extinction
- Adaptation
-
Why are waxy leaves advantageous in a dry habitat?
- Reduce water loss
- Absorb more light
- Attract pollinators
- Deter herbivores
-
What does survival of the fittest mean in biology?
- Fastest runner
- Best adapted
- Oldest age
- Strongest muscle
-
What restricts the maximum size of a population?
- Mutation rate
- Gene pool
- Biodiversity index
- Limiting factor
-
Why do less well adapted organisms produce fewer offspring?
- Lower survival rate
- Higher intelligence
- Slower metabolism
- Larger body size
-
What can drive natural selection by favouring advantageous traits?
- Hibernation
- Competition
- Pollution
- Metabolism
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