Mastering KCSE Biology with Comprehensive Topical Questions and Answers
K.C.S.E Biology Q & A - MODEL 2001PP1QN05
State two functions of muscles found in the alimentary canal of mammals.
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K.C.S.E Biology Q & A - MODEL 2001PP1QN04
Name the parts of the flower that are responsible the production of gametes
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A person whose blood groups is AB requires a blood transfusion. Name the blood groups of the donors.16/6/2020
K.C.S.E Biology Q & A - MODEL 2001PP1QN03
A person whose blood groups is AB requires a blood transfusion. Name the blood groups of the donors.
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K.C.S.E Biology Q & A - MODEL 2001PP1QN02
Why are green plants referred to as primary producers in an ecosystem?
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K.C.S.E Biology Q & A - MODEL 2001PP1QN01
Other than having many features in common, state the other characteristics of a species
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K.C.S.E Biology Q & A - MODEL 2000PP1QN10
Explain how birds of prey are adapted to obtaining their food.
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K.C.S.E Biology Q & A - MODEL 2000PP1QN09
State two advantages of metamorphosis to the life of insects.
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K.C.S.E Biology Q & A - MODEL 2000PP1QN07
Why is oxygen important in the process of active transport in cells?
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K.C.S.E Biology Q & A - MODEL 2000PP1QN07
Give reason why each of the following is important in the study of evolution:
a) Fossils records b) Comparative anatomy.
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(a) Fossils records
Gives evidence of types of plants/ animals/ organism that exist at a certain geological age. Long ago Gives evidence of morphological/ anatomical. Structure/ changes that have occurred over a long period of time. (b) Comparative anatomy. Gives evidence of relationship among organisms Gives evidence of common ancestry of a group of organisms; e.g. structural/ functional relationship among organization
​K.C.S.E Biology Q & A - MODEL 2000PP1QN06
Give a reason why lumbar vertebrae have long and broad transverse process
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K.C.S.E Biology Q & A - MODEL 2000PP1QN05
State the importance of osmo-regulation in organisms
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K.C.S.E Biology Q & A - MODEL 2000PP1QN03
State two ways in which some fungi are beneficial to humans
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K.C.S.E Biology Q & A - MODEL 2000PP1QN02
Give a reason why two species in ecosystems cannot occupy the same niche.
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K.C.S.E Biology Q & A - MODEL 2000PP1QN01
What is the function of the following cells in the retina of human eye ? Cones
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(a) Cones Discrimination of colours/ details/ accurate/ vision colour perception/ sensitivity to high intensity/ bright
(b) Rods Dim light vision/ low light intensity
K.C.S.E Biology Q & A - MODEL 1999PP1QN08
State two disadvantages of self-pollination.
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K.C.S.E Biology Q & A - MODEL 1999PP1QN07
An investigation plants with red flowers were crossed with plants with white flowers.
All the plants in the F1 generation had pink flowers. a) Give a reason for the appearance of pink flowers in the F1 generation. b) If the plants the F1 generation were selfed, state the phenotypic ratio of the F2 generation.
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​a) Co dominance
Acc; partial/incomplete/equal b) 1 red flower 2 pink flowers 1 white flower Acc 1:2:1 State three ways by which plants compensate for lack of ability to move from one place to another.15/6/2020
K.C.S.E Biology Q & A - MODEL 1999PP1QN06
State three ways by which plants compensate for lack of ability to move from one place to another.
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K.C.S.E Biology Q & A - MODEL 1999PP1QN05
Suggest tree reasons why green plants are included in a fish aquararium.
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K.C.S.E Biology Q & A - MODEL 1999PP1QN04
State two advantages of natural selection to organisms
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K.C.S.E Biology Q & A - MODEL 1999PP1QN03
Explain why sexual reproduction is important in organisms
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K.C.S.E Biology Q & A - MODEL 1999PP1QN02
Give two reasons why accumulation of lactic acid during vigorous exercise leads to an increase in heartbeat.
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K.C.S.E Biology Q & A - MODEL 1999PP1QN01
Name two processes that bring about the translocation of manufactured food
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K.C.S.E Biology Q & A - MODEL 1998PP1QN12
In a family with four children, three were found to have normal skin pigmentation while one was an albino. Using letter A to represent gene for normal skin pigmentation and a to represent the gene for albinism,
(a) What are the genotypes of the parents? (b) Work out the genotype of (i) Normal pigmentation (ii) The albino child Genotype of normal pigmented children (c) What is the probability that the fifth child will be an albino?
K.C.S.E Biology Q & A - MODEL 1998PP1QN11
State two ways by which the human immuno deficiency (H.I.V) is transmitted other than through sexual intercourse?
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K.C.S.E Biology Q & A - MODEL 1998PP1QN10
Give two reasons why primary productivity in an aquatic ecosystem decreases with depth.
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