Mastering KCSE Biology with Comprehensive Topical Questions and Answers
K.C.S.E Biology Q & A - MODEL 2014PP1QN04
The diagram below illustrates a growing pollen tube.
​(a) Name the part labelled B.
(b) Explain the role of the parts labelled A.
ANSWERS
(a) Tube nucleus;
(b) One male nucleus fuses with the egg cell nucleus to form a zygote; The other male nucleus fuses with the polar nuclei to form the endosperm;
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K.C.S.E Biology Q & A - MODEL 2014PP1QN03
State two functions of the placenta in mammals.
ANSWERS
K.C.S.E Biology Q & A - MODEL 2014PP1QN02
What is meant by the term seed dormancy?
ANSWER
K.C.S.E Biology Q & A - MODEL 2014PP1QN01
State the importance of each of the following in living organisms:
(a) nutrition (b) excretion
ANSWERS
​(a) Acquisition and utilization of nutrients;
(b) Elimination of metabolic wastes to prevent accumulation to toxic level;
K.C.S.E Biology Q & A - MODEL 2013PP1QN30
State two ways in which osmosis is significant to plants.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN29
State two functions of pelvic girdle in mammals.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN28
Name the bone that allows the head to:
(i) nod; (ii) turn side ways
answers
​(i) Atlas;
(ii) Axis allows movement in all planes;
K.C.S.E Biology Q & A - MODEL 2013PP1QN28
State two features of a ball and socket joint.
answer
K.C.S.E Biology Q & A - MODEL 2013PP1QN27
State the importance of moulting to an insect.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN27
State two differences between complete and incomplete metamorphosis.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN26
Name two sex linked traits in human beings.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN26
What is meant by the term sex linked genes?
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN25
State one adaptation of xylem vessels to their function.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN24
Explain three protective functions of mammalian blood.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN23
The diagram below illustrates a defect in the eye.
Explain how the defect illustrated above can be corrected.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN22
The diagram below illustrates a response by a certain plant.
​(a) Name the type of response.
(b) Explain how the response illustrated above occurs.
answers
​(a) Thigmotropism/Haptotropism;
(b) Part of the tendril in contact with support causes migration of auxins to the opposite side; leading to faster cell division/growth on the side not in contact with the support: This causes the tendril to curl around the support;
K.C.S.E Biology Q & A - MODEL 2013PP1QN21
What is meant by the term organic evolution?
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN21
Explain the role of continental drift in evolution.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN20
Explain the theory of evolution by natural selection.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN19
State three factors in seeds that cause dormancy.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN18
How is the human sperm cell structurally specialised?
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN17
Name the flower part that produces gametes.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN16
Name three mechanisms that ensure cross pollination takes place in flowering plants.
answers
K.C.S.E Biology Q & A - MODEL 2013PP1QN15
State two reasons why accumulation of lactic acid leads to an increase in heart beat.
answers
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