K.C.S.E Biology Q & A - MODEL 2008PP1QN28
Distinguish between protandry and protogyny.
answers
0 Comments
K.C.S.E Biology Q & A - MODEL 2008PP1QN28
State the mode of asexual reproduction in yeast.
answer
K.C.S.E Biology Q & A - MODEL 2008PP1QN27
Explain how anaerobic respiration is applied in sewage treatment.
answers
K.C.S.E Biology Q & A - MODEL 2008PP1QN26
State one use of each of the following excretory products of plants:
(a) colchicine; (b)pawpaw
answers
(a) Inducing polyploidy/ treatment
(b) Meat tenderizer K.C.S.E Biology Q & A - MODEL 2008PP1QN30
The diagram below shows two fused bones of a mammal
(a) Identify the fused bone
(b) Name the (i) Bone that articulates at the point labelled F (ii) The hole labelled G
ANSWERS
(a)Pelvic girdle
(b) (i) Femur (ii) Obturatar foramen. K.C.S.E Biology Q & A - MODEL 2008PP1QN25
Giving a reason in each case, name the class to w which each of the following organisms
Bean plant Reason Bat Reason
ANSWERS
Bean plant - Dicotyledonae
Reason Leaves have net veined; two cotyledon; tap root system; xylem with phloem in between the arms Bat Flying mammal Reason Have sweat glands; 3 ear ossicle; presence of fur; mammaring glands K.C.S.E Biology Q & A - MODEL 2008PP1QN24
Name the sites where light and dark reactions of photosynthesis take place
Light reaction Dark reaction
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN23
The diagram below shows a human tooth
(a) Identify the tooth
(b) How is the tooth adapted to its function (c) State the role of the following vitamins in the human body (i) C (ii) K
ANSWERS
(a) Canine
(b) Pointed/ sharp for piercing/ tearing/ cutting food (c) (i) C- Absorption of lien/ prevent scurvy/ quick healing of wounds/ best immunity/ ant oxidants/ prevents anaemia/ formation of connective tissues/ ​ K – blood clothing
K.C.S.E Biology Q & A - MODEL 2008PP1QN21
What is seed dormancy
ANSWER
​K.C.S.E Biology Q & A - MODEL 2008PP1QN20
Name the opening to the chamber of the heart of an insect
ANSWER
K.C.S.E Biology Q & A - MODEL 2008PP1QN20
Name an organism which has single circulatory system
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN20
what is a single circulatory system
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN19
The diagram below represents a tissue obtained from an animal
(a) Identify the tissue
(b) State the functions of the tissue named ( a) above
ANSWERS
(a) Cardiac muscle
(b) Contraction of the heart
K.C.S.E Biology Q & A - MODEL 2008PP1QN18
How is the epidermis of a leaf of a green plant adapted to its function
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN17
Account for the following phases of a sigmoid curve of a growth of an organism
(a) Lag phase (b) Plateau phase
ANSWERS
(a) Few dividing cells/ cells not adjusted to surrounding environment
(b) Most cells fully differentiated/ rate of cell division equals rate of cells dying
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 2007PP2QN07
Describe the structure and functions of the various parts of the human ear
answers
The ear is an organ involved in perceiving sound and maintaining body balance and posture. It is made of the following sections
Pinna – That is funnel shaped structure made of skin and cartilage. It receives sound waves and directs them to the ear tube. External/auditory meatus – That is a canal lined with air and wax. It allows passage of sound waves to the middle ear. The hairs and wax trap dust particles that enter the ear. Tympanic membrane – That is a thin flexible sheet-like structure receives sound waves and pass the vibration to the ossicles. Middle ear that is composed of Tiny bones known as ossicles – They are anvil and incus. They amplify vibration from the tympanic membrane. Eustachian tube – That connects the ear to the nasal cavity. It balances pressure on both sides of the tympanic membrane. Oral window – That is a thin flexible membrane that opens into the inner ear. it receives vibrations from the ossicles and passes them to the inner ear. Inner ear that is compost of; Vestibular apparatus- That are the semicircular canals, utricles and saccules. They help in maintenance of body balance and posture. Cochlea – That is a coiled structure that has sensory cells for hearing. It connected to the auditory nerve that is involved in transmission of sounds to the brain
K.C.S.E Biology Q & A - MODEL 2007PP2QN06
Other than sugars name two compounds that are translocated in phloem
answers
K.C.S.E Biology Q & A - MODEL 2007PP2QN06
Name the structures in phloem that are involved in the translocation of sugars
answers
K.C.S.E Biology Q & A - MODEL 2007PP2QN06
In the experiment to determine the effect of ringing on the concentration of sugar in phloem a ring of bark from the stem of a tree was cut and removed. The amount of sugar in grammes per 16cm3 piece of bark above the ring was measured over a 24 hour period. Sugar was also measured in the bark of a similar stem of a tree which was not ringed. The results are shown in the table below.
(a) Using the same axes, plot a graph of the amount of sugar against time
(b) At what time was the amount of sugar highest in the (i) Ringed stem (ii) Normal stem? (c) How much sugar would be in the ringed stem if it was measured at 0345hours? (d) Give reasons why there was sugar in the stems of both trees at 06 45 hours (e) Account for the shape of the graph for the tree with ringed stem between: (i) 06 45 hours and 15 45 hours (ii) 15 45 hours and 00 45 hours
answers
(b)(i) 15: 45
(ii) 12:45 (c) 0.79 + 0.02 grammes (d) The food that had been manufactured the previous day had been converted to soluble sugars and was being translocated to other parts of the plant. (e)0645 hours and 15 45 hours There was low concentration of sugars early in the morning as there was little translocation As day progresses the light intensity increases and more food is manufacture thus more translocation increasing concentration of sugars (ii)15 45 hours and 0045 hours The light intensity is decreasing reducing rate of photosynthesis. Less food is manufactured hence less is translocation As it turns dark there is no photosynthesis reducing concentration of sugars translocated.
K.C.S.E Biology Q & A - MODEL 2007PP1QN26
State one way by which HIV/AIDS is transmitted from mother to child
ANSWER
K.C.S.E Biology Q & A - MODEL 2007PP1QN25
Name the features that increase the surface area of small intestines
ANSWER
K.C.S.E Biology Q & A - MODEL 2007PP1QN25
State a factor that denatures enzymes
ANSWER
|
Archives
December 2024
Categories
All
TOPICSFORM 1
Form 2
Form 3
Form 4
|
Can't find what you are looking for? Don't worry, Use the Search Box Below.
Primary Resources
College Resources
|
Secondary Resources
|
Contact Us
Manyam Franchise
P.O Box 1189 - 40200 Kisii Tel: 0728 450 424 Tel: 0738 619 279 E-mail - sales@manyamfranchise.com |