K.C.S.E Biology Q & A - MODEL 2007PP2QN08
Describe causes and methods of controlling water pollution
answers
K.C.S.E Biology Q & A - MODEL 2007PP1QN19
Name the part of a bean that elongates to bring about epigeal germination
ANSWER
K.C.S.E Biology Q & A - MODEL 2007PP1QN19
State two environmental conditions that can cause seed dormancy
ANSWERS
K.C.S.E Biology Q & A - MODEL 2007PP1QN18
State two disadvantages of sexual reproduction in animals
ANSWERS
K.C.S.E Biology Q & A - MODEL 2007PP1QN17
The diagram below represents a stage during cell division
(a) (i) Identify the stage of cell division
(ii) Give three reasons for your answer in (a) (i) above (b) Name the structures labeled M
ANSWERS
(a) (i) Anaphase 1
(i) Homologous chromosomes separates at the equator (ii) Chromosomes start migrating to opposite poles (iii) Sister chromatids attached at the centromere (b) Spindle fibres
K.C.S.E Biology Q & A - MODEL 2007PP1QN16
State two ways in which schritosoma species is adapted to parasitic mode of life
ANSWERS
K.C.S.E Biology Q & A - MODEL 2007PP1QN15
Name a method that could be used to estimate the population size of the following organisms
(i) Fish in a pond (ii) Black jack in a garden
ANSWERS
​(i) Capture and recapture method
(ii) Line transect
K.C.S.E Biology Q & A - MODEL 2007PP1QN15
Distinguish between population and community
ANSWERS
K.C.S.E Biology Q & A - MODEL 2007PP1QN14
What is the meaning of the terms
(i) Homeostatic (ii) Osmoregulation?
ANSWERS
K.C.S.E Biology Q & A - MODEL 2006PP2QN05
The diagram below represents human foetus in a uterus.
a) Name the part labeled S.
b) i) Name the types of blood vessels found in the structure labeled Q. ii) State the differences in composition of blood found in the vessels named in (b)(i) above. c) Name two features that enable the structure labeled P carry out its function. d) State the role of the part labeled R
answers
(a) Chorion
(b) (i) Arteries; veins (ii) More food nutrients; more oxygen in veins less food nutrients more excretory products in arteries (c) Highly vascular zed; large surface area Presence of secretory cells (d) Cushion/ absorb shock Give three reasons for loss of energy from one trophic level to another in the food chain.19/6/2020
K.C.S.E Biology Q & A - MODEL 2006PP2QN03
Give three reasons for loss of energy from one trophic level to another in the food chain.
answers
K.C.S.E Biology Q & A - MODEL 2006PP2QN03
Distinguish between pyramid of numbers and pyramid of biomass.
answers
K.C.S.E Biology Q & A - MODEL 2006PP1QN26
The chart below represents a simplified nitrogen cycle.
​What is represented by X,Y, and Z?
answers
X- Denitrifying bacteria/ denitrification
Y- Animals/ Herbivores; accept primary consumers Z- Nitrogen fixing bacteria ( in soil) accept Azotobacter.
K.C.S.E Biology Q & A - MODEL 2006PP1QN19
Give three advantages of cross pollination.
answers
K.C.S.E Biology Q & A - MODEL 2006PP1QN14
Why is oxygen necessary in the germination of seeds?
answer
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