1.
State what is meant by a gene pool. [1]
JD SCIENCE
Evolution, speciation and biodiversity
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by Hardy–Weinberg. [1]
3.
State what is meant by directional selection. [1]
4.
State what is meant by stabilising selection. [1]
5.
State what is meant by genetic drift. [1]
6.
State what is meant by succession. [1]
7.
State what is meant by an ecosystem. [1]
8.
State what is meant by conservation. [1]
9.
State what is meant by mark-release-recapture. [1]
10.
State what is meant by niche. [1]
11.
Devon is asked about a gene pool in a Edexcel Biology paper.
(a) Describe a gene pool. [2]
(b) Explain why a gene pool is important in this topic. [3]
12.
Devon is asked about Hardy–Weinberg in a Edexcel Biology paper.
(a) Describe Hardy–Weinberg. [2]
(b) Explain why Hardy–Weinberg is important in this topic. [3]
13.
Devon is asked about directional selection in a Edexcel Biology paper.
(a) Describe directional selection. [2]
(b) Explain why directional selection is important in this topic. [3]
14.
Devon is asked about stabilising selection in a Edexcel Biology paper.
(a) Describe stabilising selection. [2]
(b) Explain why stabilising selection is important in this topic. [3]
15.
Devon is asked about genetic drift in a Edexcel Biology paper.
(a) Describe genetic drift. [2]
(b) Explain why genetic drift is important in this topic. [3]
16.
Devon is asked about succession in a Edexcel Biology paper.
(a) Describe succession. [2]
(b) Explain why succession is important in this topic. [3]
17.
HWE q²=0.04. q and 2pq if p=0.8 [3]
18.
Mark-release: 40 marked, 50 recaptured of which 10 marked. N [3]
19.
A population grows from 80 to 100. Percentage increase [3]
20.
Simpson: two communities, higher D means [3]
21.
If p=0.9, frequency of homozygous dominant [3]
22.
40 of 200 snails are striped recessive. q² [3]
23.
Devon carries out a Edexcel-style required practical linked to populations, evolution and ecosystems. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Devon carries out collecting valid data for populations, evolution and ecosystems. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Devon carries out drawing a graph for populations, evolution and ecosystems. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Devon carries out evaluating a method about populations, evolution and ecosystems. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a gene pool with Hardy–Weinberg. [4]
28.
Compare Hardy–Weinberg with directional selection. [4]
29.
Compare directional selection with stabilising selection. [4]
30.
Compare stabilising selection with genetic drift. [4]
31.
Apply your knowledge of an ecosystem to this situation: dynamic [3]
32.
Apply your knowledge of conservation to this situation: in situ vs ex situ [3]