9700/43

Biology 9700/43October/November 2010

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

10
questions
100
marks
120
minutes

Topics Homeostasis · Energy and Respiration · Selection and Evolution · Classification, Biodiversity and Conservation · (outdated) Aspects of Human Reproduction · (outdated) Biotechnology · +4 more

Q1Classification, Biodiversity and ConservationFree sample
(a)

A 50-year study of marine animal biodiversity in the coastal waters of Canada was carried out.

The percentage decrease in the number of marine animal species between 1950 and 2000 is shown in Fig. 1.1.

Suggest explanations for the decrease in the number of marine animal species between 1950 and 2000.

3M
(b)

Explain what is meant by the term biodiversity.

2M
(c)

Discuss the benefits of maintaining the biodiversity of a marine ecosystem, such as that in the coastal waters of Canada.

3M

The rest of this paper

9 more questions
  • Q2(outdated) Aspects of Human Reproduction7M
  • Q3(outdated) Biotechnology16M
  • Q4Homeostasis · Energy and Respiration · (outdated) Crop Plants16M
  • Q5Genetic Technology8M
  • Q6Selection and Evolution7M
  • Q7Homeostasis8M
  • Q8Photosynthesis15M
  • Q9Inheritance · Selection and Evolution15M
  • Q10Energy and Respiration15M
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