| Q 1
(a)
Name the following :
(i) A pollutant which reduces the oxygen carrying capacity of blood.
(ii) The male reproductive cells of mammals.
(iii) Sheet of muscle between the thorax and abdomen of mammals.
(iv) The element required for clotting blood in man.
(v) The tube that leads from the ovary of the uterus.
(vi) Openings found on the undersurface of dorsiventral leaves.
(vii) Tissue concerned with upward conduction of water in plants.
(viii) Condition of cell in which the cell contents are shrunken.
Q 1(b) Complete the following
sentences (i) to (vi) given belows by filling in the appropriate word of
terms from the given below:
Osmosis, Ciliary muscle, Aorta, Stapes, Alveoli, W.H. O, Malleus,
Diffusion, Dorsal Aorta, Bronchioles, Iris, Red cross.
(i) The part of eye responsible for change in the size of the pupil is the
.............................
(ii) The process by which molecules distribute themselves evenly within
the space they occupy is termed ........................
(iii)The ultimate end parts of the respiratory system in man are the
.................................
(iv) The organisation which provides relief to victims of any nationals
calamity is the ...............................
(v) The blood vessel leaving the left ventricle of the mammalian heart is
the .............................
(vi) The ear ossicle in contact with the oval window of the inner ear is
the ...............................
Q 1 (c)(i) Mention if the
following statements are true or false:
1. The pregnancy of the women can be prevented by the method of Vasectomy.
2. Cones are the receptors cells in the retina of the eye sensitive to dim
light.
3. The unit of light absorbed by the chlorophyll during photosynthesis is
the proton.
4. D.D.T is a disinfectant.
5. Lungs of man are protected by the pericardium.
6. The part of the ear associated with balance is the cochlea.
(ii) Rewrite the wrong statements from 1 to
6 above in the correct form by changing only the first or last word.
Q 1 (d)
The diagram along side represent certain organs in the abdominal
region of man.
(i) Level the parts numbered 1 to 7.
(ii) Name the organ systems shown in the diagram.
(iii) Name three parts other than those marked which are clearly
seen in the diagram.
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Q 1
(e) Given alongside is the diagram of a bean root:
(i) What term is given to the part marked 'X' ?
(ii) What does it contain?
(iii) What significant role is played by the
structure named in Q (ii) above in the soil? Briefly discuss how
the structure plays this role.
(iv) What happens to the above mentioned structure when the plants
dies?
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Q 1 (f) Give one point of difference
between any three of the following pairs on the basis of what is indicated
in the brackets.
(i) Sensory and motor neuron. (function)
(ii) Blood and lymph. (composition)
(iii) Dicot and monocot stem (arrangements of vascular bundles )
(iv) Inspired and expired air (percentage of Oxygen and carbon dioxide)
(v) Ureter and Urethra (function)
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