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WorksheetsKS3 Variation, Classification & Inheritance
Total questions: 45
Worksheet time: 31mins
An organism's appearance or some other detectable characteristic is it's................?
phenotype
gene
allele
genetic variation
The entire genetic makeup of an organism or the combination of genes for one or more specific traits is its ....
genetic variation
genotype
gene
allele
When a bee helps pollinate flowers, it is assisting in ...........
asexual reproduction
sexual reproduction
vegetative propogation
fragmentation
What is the genus and species name of a human?
Canis domesticus
Animalia primates
Homo sapiens
Ursus maritimus
What classification is least specific
Genus
Species
Class
Kingdom
What does "Binomial Classification" mean?
two systems
two classifications
two names
two hamburgers
What do scientists look at when they classify living things?
the diseases the organisms suffer from
what the organisms like and dislike
the characteristics the organisms have in common
the ages of the organisms
What is NOT a feature of natural selection?
competition for resources
production of many offspring
selection by humans
variation within the population
What is a mutation?
a change in a gene or chromosome
a condition caused by a dominant allele
a process used in genetic engineering
a type of continuous variation
Which characteristic shows discontinuous variation in humans?
height
length of foot
tongue rolling
weight
What is an example of a characteristic that shows discontinuous variation in humans?
blood group
body mass
height
width of hand
In arthropods, growth occurs only after the exoskeleton is shed and before the new one hardens. Which graph shows a typical growth curve for an arthropod?
Cacti have fewer stomata than other plants.
How does this help them to survive in desert conditions?
It increases loss of water.
It increases uptake of carbon dioxide.
It reduces loss of water.
It reduces uptake of carbon dioxide.
Which is a sudden change in a gene or chromosome?
allele
genotype
mutation
phenotype
The graph shows the masses of two different types of tomato.
What can be concluded from the graph?
Genes do not affect the mass of tomatoes.
Type 1 tomatoes show continuous variation.
Type 2 tomatoes are sometimes smaller than type 1 tomatoes.
Type 2 tomatoes show discontinuous variation.
The bar chart shows the heights of pea plants grown from 500 pea seeds.
What variation do the plants show?
continuous variation only
discontinuous variation only
both continuous variation and discontinuous variation
neither continuous variation nor discontinuous variation
Variation is:
a disease
the scientific name for fertilisation.
differences in characteristics
similarities in characteristics
An example of an inherited characteristic is:
eye colour
a tattoo
a scar
similarities in characteristics
an inherited characteristic is caused by ....
genetic information in the nuclei of cells.
environmental factors
blood
children learning things from their parents.
Selective breeding is:
an exciting new technology that may alter our lives in the future.
a way of choosing the winners at animal shows.
another name for when animals reproduce sexually.
a way of producing animals and plants with features that are useful to humans.
The two gametes found in plants are called:
The mono and the poly
The pollen grain and the egg cell
The pollen grain and the sperm cell.
The sperm cell and the egg cell.
Which of these would be the least useful characteristic in potato plants for a potato farmer.
producing a high yield
having the ability to cope with a lack of water.
having a low resistance to disease.
producing large potatoes
