1. Why is it difficult to prove that competition causes variations in a population?
- Correlation on a graph is not shown
- Many other factors also influence population size
- The data collected is very specific so it is difficult to establish a link
- Competition happens very quickly
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Other questions in this quiz
2. How would you estimate a population size from mark-release-recapture?
- [no. individuals in first sample * no. in second sample]/no. marked individuals recaptured
- [no. marked individuals recaptured * no. in first sample] *100
- [no. marked individuals * no. marked individuals recaptured]/no. individuals in first sample
- [no. marked individuals recaptured * no. in second sample]/no. individuals in first sample
3. 'Only those individuals who are able to escape predators/withstand disease/withstand an adverse climate will survive to reproduce'. What is this termed?
- Selection pressure
- Natural selection
- Survival of the fittest
- Darwin's Law
4. What could increase human birth rate?
- Social/cultural practices
- A higher proportion of people studying at university
- More contraception
5. What is assumed for the mark-release-recapture process?
- The marked group form a niche of their own away from the unmarked group
- The proportion of marked:unmarked in the 2nd sample is greater than the proportion of the population as a whole
- That the method of marking doesn't make the organism more liable to predation
- The marked group have a high reproductive rate