Daily Practice

GCSE Science

2nd September 1992

5 questions · GCSE · 584 questions in this band

1
Inheritance, Variation and Evolution
Name the three-domain system of classification, and name the scientist most associated with proposing it.
2
DNA, Genetics and Inheritance
A man has genotype XY. State his sex, and state which sex chromosomes are found in the sperm cells he produces.
3
Variation, Evolution and Selection
State what is meant by a selection pressure.
4
Ecology
Give one example of a biotic factor that could affect a population of rabbits.
5
Ecosystems, Adaptation and Feeding Relationships
Explain why a pyramid of biomass is never wider at the top than at the bottom.

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