WorksheetsGCSE Sampling Techniques
Total questions: 10
Worksheet time: 7mins
Which of these are classed as abiotic factors that could affect a population?
Light
Temperature
Pathogens
Dissolved oxygen concentration
Food availability
Which of these are classed as biotic factors that could affect a population?
Light
Temperature
Pathogens
Predators
Carbon dioxide concentration
Fill in the blank: Members of the same rabbit population competing for grass as a food resource is an example of __(what?)__ competition? Check your spelling!
(a)
Random sampling is used to estimate a population of a species in a habitat. Which of these is NOT correct?
We can just chuck the quadrat where we want to sample
We must choose coordinates randomly to avoid being biased in our results
We must take multiple readings and calculate a mean number
This method only really works for plants and (very)slow moving animals
Which of the following (more than 1!) is true?
Increasing the number of samples we take means our results are more representative
In random sampling, taking samples at random will avoid being biased in our method
In random sampling we need a tape measure to set out a grid of coordinates
To estimate the total number of a population, we multiply the mean per m2 by the total area
Which of the following hypotheses would we use a transect sample for?
Comparing the population of daisies growing on lawns at the front and back of a house
Seeing if the height of stinging nettles changes as you move further away from a footpath
Estimating the total population of strawberry plants in a farmer's field
Investigating changes in the plant species present in sand dunes as you move further away from a beach
A student was randomly sampling to estimate a clover population. In 5 quadrats, they found 11, 8, 11, 9 and 1 clover plants. What is the mode for these results?
8
9
11
40
A student was randomly sampling to estimate a clover population. In 5 quadrats, they found 11, 8, 11, 9 and 1 clover plants. What is the mean for these results? Type out the number digits
(a)
Which of these formulae is for photosynthesis?
CO2 + H2O -> Glucose + O2
Glucose + O2 -> CO2 + H2O
CO2 + O2 -> Glucose + H2O
CO2 + Glucose -> O2 + H2O
What type of pathogen causes the disease malaria?
Bacteria
Protist
Virus
Fungus
