Kirinyaga Central Mock 2013 Biology Paper 2
Past Paper Info
- Source: KIRINYAGA CENTRAL MOCK 2013
- Education Level: Secondary School
- Subject: Biology
- Paper: Paper 2
- Score: 80 Marks
- Assessment: Full Paper
Examine the diagram below and use it to answer the questions that follow.
(a) Name the parts labeled.
(a)
(i) B [1 Mark](a)
(i) C [1 Mark](iii) [1 Mark]
(b)
(c)
(d)
The figure below is a pedigree showing the inheritance of colour-blindness, a disease transmitted through a recessive gene located on the X-chromosome.
(a) Using the symbol N for normal gene and n for colourblind gene, write down the genotypes of parents 1 and 2. [2 Marks]
(b)
The diagrams below illustrate some chromosome mutations.
(a) Identify the mutations.
(a)
(i) A [1 Mark](ii) B [1 Mark]
(iii) C [1 Mark]
The diagram below shows structures of the bat wing and human arm.
(a) These structures are thought to have same ancestral origin. State one structural similarity and one adaptational difference between the two.
(a)
(i) Structural similarity. [1 Mark](ii) Adaptational difference. [2 Marks]
(b)
(c)
(d)
The diagram below represents some hormones, their sources and functions in a mammal.
(a) Identify the gland described as master gland. [1 Mark]
(ii) III [1 Mark]
(iii) V [1 Mark]
(iii) VI [1 Mark]
(c)
(d)
Ascaris lumbricoides is an endoparasite.
(a) Name the genus to which it belongs. [1 Mark]
(b)
(c)
(d)
The table below shows how the quantities of sweat and urine vary with external temperature.
(a) On the same graph, plot the quantities of urine and sweat produced against the external temperature. [7 Marks]
(b)
(c)
(d)
(e)
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