1) Name the following:
a) A pollutant which reduces the oxygen carrying capacity of blood.
b) the male reproductive cells of mammals.
c) Sheet of muscles between the Thorax and abdomen and mammals.
d) The element required for clotting blood in man.
e) The tube that leads from the ovary to the uterus.
f) Openings found on the undersurface of dorsoventral leaves.
g) Tissue concerned with upward conduction of water in plants.
h) Condition of cell in which cell contents are shrunken. (8)
2) complete the following sentences (i) to (IV) given below by filling in the appropriate word or terms from the list given below: (4)
Osmosis, Ciliary muscles, Aorta, Stapes, Malleus, Diffusion. Dorsal aorta, bronchioles, Iris.
a) the part of the eye responsible for change in the size of the pupil is the__
b) The process by which the molecules distribute themselves evenly within the space they occupy is termed_____.
c) The blood vessel leaving the left ventricle of the mammalian heart is the ___
d) The ear ossicle in contact with the oval window of the inner ear is the___
3) Mention if the following statements are TRUE or FALSE: (4)
Rewrite the wrong statements from one to six above the correct form by changing only the first or the last word.
a) Pregnancy in women can be prevented by the method of vasoctamy.
b) Cones are the receptor cells in the retina of the eye sensitive to dim light.
c) The unit of light absorbed by the chlorophyll during photosynthesis is the proton.
d) The parts of the ear of associated with balance is the cochlea.
4) Give one point of difference between any three of the following pairs, on the basis of what is indicated in the brackets:. (4)
a) sensory and motor neurons(function)
b) blood and lymph (composition)
c) Dicot and monocot stem(Arrangement of vascular bundles)
d) ureter and urethra(function)
5) Complete the following table by filling in the correct location of the following structure in the human body and mention one main function of each:
(5)
Structure Location Function
a) epiglottis
b) Eustachian tube
c) Cordae tendinee
d) Nephron
e) Organ of corti
6) Write briefly as indicated in the brackets, on the following :. (4)
a) Myopia(symptoms and cause)
b) Red blood corpuscles (Origin and Function)
c) Tympanum( location and function)
d) mitochondria(structure and function)
7) Answer briefly in the following questions :. (4)
a) Why are capillaries thin walled ?
b) Mention two functions of the choroid coat in the eye.
c) What is meant by 'gestation' period?
d) What is the effect of shivering?
e) What is meant photolysis of water?
8)a) Define transpiration.
b) Describe an experiment to prove that transpiration occurs more from the under-surface of dorsoventral leaves. (4)
9) Give a proparate terms for the following :
a) A membrane that surrounds the foetus and secrets a protective fluid.
b) Protecting coverings of the brain and spinal cord.
c) A statistical study of human population.
d) Substances that are applied to the surroundings where germs thrive and multiply.
e) The inward movement of solvent molecules through the plasma membrane of a cell.
f) Loss of water in the form of droplets from the marginal of a leaf.
g) Adjustment of the eye in order to obtain a clear vision of objects at different distances.
h) The small amount of inhaled air in the respiratory tract that does not take part in gaseous exchange. (8)
10) Explain briefly the idea containing any five of the following statements:
a) Oxygen given out during photosynthesis comes from water.
b) The need to linit the size of the family is more vital today than ever before. Give two examples.
c) Root hairs become flaccid, when fertilizers are added to the moist soil around it.
d) Transplanting of seedling to a flower bed in the evening is better than doing so in the morning.
e) In summer, urine is slightly thicker than in winter.
f) Man can live without food for a number of days but he cannot survive without oxygen for more than a few minutes.
g) Environmental pollution is the recent problem. Do you agree ? Give two reasons to support your answer. (10
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