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4 marksBiological Evolution

CSEC Biology · January 2018 · Paper 2 · Question 1(f)

Of the six lizards collected, four are green and two are brown. These are later classified by field scientists as members of the same species. Use the theory of natural selection to explain why the green lizards are apparently more numerous than the brown ones.

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Other parts of this question

  1. 1(a)Plot the data from Table 1 on the grid provided on page 5.[5 marks]
  2. 1(b)Name and outline TWO possible sampling methods that the students may have used to collect the data shown in Table 1.[4 marks]
  3. 1(c)Select from Table 1, ONE organism which belongs to EACH of the following taxonomic groups: Arthropod, Reptile, Bird, Amphibian.[4 marks]
  4. 1(d)Explain how the method of nutrition used by the wild pine differs from the method of nutrition used by the other organisms in the table.[2 marks]
  5. 1(e)(i)Name and describe the type of relationship that exists between the wild pine and the tree.[2 marks]
  6. 1(e)(ii)One student observes an orange-yellow vine growing on one portion of the tree where the leaves are dying. How does the relationship between this vine and the…[2 marks]
  7. 1(e)(iii)State TWO reasons why the vine causes the leaves of the tree to die.[2 marks]

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