K.C.S.E Biology Q & A - MODEL 2016PP1QN20
State three factors that contribute to the deceleration phase in the population curve of an organism.
answers
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Explain why it is not advisable to be in a poorly ventilated room with a burning charcoal stove.30/6/2020
K.C.S.E Biology Q & A - MODEL 2016PP1QN019
Explain why it is not advisable to be in a poorly ventilated room with a burning charcoal stove.
answer
​Charcoal in limited supply of air produces carbon(ii) oxide, which combines with haemoglobin forming Carboxylhaemoglobin which is a stable compound and does not dissociate easily, reducing capacity of the haemoglobin to carry oxygen leading to suffocation hence death
K.C.S.E Biology Q & A - MODEL 2016PP1QN017
State the name given to the study of:
(i) The cell (ii) Micro-organisms
answers
​(i) The cell
Cytology: (ii) Micro-organisms Microbiology K.C.S.E Biology Q & A - MODEL 2016PP1QN016
State one use of each of the following excretory products of plants:
(a) colchicine (b) papain
answers
​(a) colchicine
Inducing polyploidy/ treatment (b) papain Meat tenderizer
K.C.S.E Biology Q & A - MODEL 2016PP1QN15
What is seed dormancy
answer
K.C.S.E Biology Q & A - MODEL 2016PP1QN14
Give three factors that determine the amount of energy a human being requires in a day.
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN13
State two factors that affect enzymatic activities
(b)Explain how one of the factors stated in (a) above affects enzymatic activities.
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN12
Other than using the quadrant, give two methods of estimating population of grass.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN11
Name two benefits that a parasite derives from the host
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K.C.S.E Biology Q & A - MODEL 2016PP1QN10
State two functions of the placenta in mammals.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN10
State two disadvantages of sexual reproduction in animals.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN09
What is the effect of contraction of the diaphragm muscles during breathing in mammals?
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K.C.S.E Biology Q & A - MODEL 2016PP1QN09
Name two structures for gaseous exchange in aquatic plants.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN08
State three functions of Golgi apparatus.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN07
Explain how the following prevent self-pollination.
(i) Protandry (ii) Self- sterility.
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN06
Explain continental drift as an evidence of evolution.
answer
K.C.S.E Biology Q & A - MODEL 2016PP1QN05
State the economic importance of anaerobic respiration in plants.
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN04
State three functions of blood other than transport.
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN04
Name one defect of the circulatory system in humans.
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K.C.S.E Biology Q & A - MODEL 2016PP1QN03
State the important of tactic response among some members of the kingdom protista.
answer
K.C.S.E Biology Q & A - MODEL 2016PP1QN02
Why are plants able to accumulate most of their waste products for long?
answers
K.C.S.E Biology Q & A - MODEL 2016PP1QN01
Name the type of muscles found in the following organs.
Stomach Bone
answers
​Stomach - Visceral muscles/ smooth muscle.
Bone - Skeletal muscles
K.C.S.E Biology Q & A - MODEL 2016PP1QN01
State two ways in which the muscles of the mammalian heart are special.
ANSWERS
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