Mastering KCSE Biology with Comprehensive Topical Questions and Answers
K.C.S.E Biology Q & A - MODEL 1998PP1QN09
What makes young herbaceous plant remain upright?
ANSWERS
1 Comment
K.C.S.E Biology Q & A - MODEL 1998PP1QN08
A flower was found to have the following characteristics:
Inconspicuous petals Long feathery stigma Small, light pollen grains (a) What is the likely agent of pollination of the flower (b) What is the significance of the long feathery stigma in the flower?
ANSWERS
(a) wind
(b) To enable it trap pollen grains in the air; reject catch/ attach for trap K.C.S.E Biology Q & A - MODEL 1998PP1QN07
The diagram below represents a mammalian bone
​(a) Name the bone
(b) Name the type of the joint formed by the bone at its anterior end with the adjacent bone
ANSWERS
(a) Femur
(b) Ball and socket K.C.S.E Biology Q & A - MODEL 1998PP1QN06
In an experiment it was found that when maggots are exposed to light they move to dark areas.
(a) Name the type of response exhibited by the maggots (b) Name the advantages of the response to the maggots
ANSWERS
​(a) Phototais
(b) To avoid desiccation/ drying/ dehydration Escape from predators; What is the relationship between leguminous plants and bacteria found in their root modules?15/6/2020
​K.C.S.E Biology Q & A - MODEL 1998PP1QN05
What is the relationship between leguminous plants and bacteria found in their root modules?
ANSWERS
K.C.S.E Biology Q & A - MODEL 1998PP1QN04
Why are gills in fish highly vascularized?
ANSWERS
K.C.S.E Biology Q & A - MODEL 1998PP1QN03
Which organelle would be abundant in:
ANSWERS
Skeletal muscle cell
K.C.S.E Biology Q & A - MODEL 1998PP1QN02
State one effect of magnesium deficiency in green plants
ANSWERS
K.C.S.E Biology Q & A - MODEL 1998PP1QN01
Why are people with blood group O universal donors?
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN10
Name a disease caused by lack of each of the following in human diet.
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN09.
State three pieces of evidence that support the theory of evolution
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN08
A person was found to pass out large volumes of dilute urine frequently.
Name the (a) Disease the person was suffering from (b) Hormone that was deficient
ANSWERS
​(a) Disease the person was suffering from
Diabetes inspidus ref. Diuresis/ water diabetes (b) Hormone that was deficient Antidiuretic hormone/ ADH/Vasopressin
K.C.S.E Biology Q & A - MODEL 1997PP1QN07
State three structural differences between biceps muscles of the gut.K.C.S.E Biology Q & A - MODEL 1997PP1QN06
​ Oil can be applied on the stagnant water to control the spread of malaria.
(a) How does this practice control the spread of malaria? (b) Give a reason why this practice should be discouraged
ANSWERS
(a) Mosquito larvae/ Pupae are killed; Accept suffocation/ Breaking life cycle of Mosquitoes
(b) Pollution of environment/ oil expensive, other aquatic are killed; accept Contamination.
K.C.S.E Biology Q & A - MODEL 1997PP1QN05
In an accident a victim suffered brain injury. Consequently he had loss of memory. Which part of the brain was damaged?
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN04
State two ways in which xylem vessels are adapted to their function
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN03
What are the three end products of anaerobic respiration in plants
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN02
A student caught an animal which had the following characteristics:
ANSWERS
K.C.S.E Biology Q & A - MODEL 1997PP1QN01.
State the functions of the following cell organelles
(a) Golgi apparatus
(b) Ribosomes
ANSWERS
​(a) Golgi apparatus
K.C.S.E Biology Q & A - MODEL 1996PP1QN14b
Name two structures used for gaseous exchange in plants
answers
Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere14/6/2020
K.C.S.E Biology Q & A - MODEL 1996PP1QN14
Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere
answers
The diagram below shows a set – up that was used to demonstrate Fermentation Glucose solution was boiled and oil added on top of it. The glucose solution was then allowed to cool before suspension. (a) Why was the glucose solution boiled before adding the yeast Suspension? (b) What was the importance of cooling the glucose solution before adding the yeast suspension? (c) What was the use of oil in the experiment? (d) What observation would be made in test tube B at the end of the experiment? (e) Suggest a control for this experiment answers
K.C.S.E Biology Q & A - MODEL 1996PP1QN12 Give a reason why it is necessary for frogs to lay many eggs
ANSWERS
​To increase the chances of fertilization and survival of species
​Give a reason why it is only mutation in genes of gametes that can influence evolution.
ANSWERS
Gametes form new offspring​A student set up an experiment as shown in the diagrams below;
The set up was at room temperature for a week
ANSWERS
(a) O2 is necessary for germination
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