| 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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