Daily Practice

GCSE Science

29th April 1991

5 questions · GCSE · 584 questions in this band

1
Inheritance, Variation and Evolution
State one difference between selective breeding and genetic engineering.
2
DNA, Genetics and Inheritance
In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
3
Variation, Evolution and Selection
Define speciation.
4
Ecology
Give one example of an abiotic factor that could affect where a plant species grows.
5
Ecosystems, Adaptation and Feeding Relationships
In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.

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