Q 1
(a)Name the following :
(i)The cavity in the body in which
the human lungs are located .
(ii) The soluble
protein present in blood plasma responsible for clotting.
(iii)The
parts of the female reproductive system where fertilisation takes
place.
(iv)The organisation that provides help and relief to victims of
flood.
(v)The process by which leucocytes engulf and destroy
bacteria.
(vi) Respiratory openings found on stems of water in
the form of droplets.
(viii)plants that prepare their own food from basic raw
materials.
Q 1(b)complete the following
statements (i) to (vi) by choosing the correct alternative from
those given in brackets:
(i) The protective covering of lungs is
the (pericardium,pleura,diaphragm).
(ii) Bacteria found in the
nodules of leguminous plants are (saprophytic,parasitic, symbiotic)
in nature .
(iii)The gaseous pollutant which causes acid rain is
(carbon monoxide,Carbon dioxide, Nitrogen dioxide).
(iv)
The valve present between the left atrium and the left ventricle is
the (tricuspid valve, bicuspid valve ,semiluar valve).
(v) The
blood versel supplying blood to the kidney is the (renal vein, renal
artery, dorsal aorta).
(vi) which of the following is an
insecticide ?(Phenol ,DDT, carbolic acid)
Q 1(c) (i) State whether the
following statements are True or False:
1.Deafness is caused due
to the rupturing of the pinna.
2.Penicillin obtained from
Penicillium notatum is an antibody .
3.The percentage
of oxygen in ins pired air is 16.4.
4.cells that have lost
their water content are said to be deplasmolysed.
5.Photosynhesis
result in loss of the dry weight of the plant .
6.Xylem is the
water conducting tissue in plants .
(ii)
Rewrite the false statement from 1 to 6 above in their correct
form by changing the first or the last word only .
Q 1(d)
Complete the following table by filling in the blank space numbered1
to 6:
| Structure
|
Function |
| Yellow spot |
1 |
| 2 |
Filled with sap mostly
in plants. |
| 3 |
Produces male gametes
in man . |
| Erythrocytes
|
4 |
| Grana of chlorophyll |
5 |
| 6 |
Transfers urine
outside the body |
Q 1 (e) Given below is the
diagram of the Human Ear .Study the same and then answer
the question that follow :
(i) what role does the
ear drum play in hearing ?
(ii) What common term is given to the
parts labeled A,B and E?
(iii) Would there be any difference if
these three parts mentioned in 'ii' above were replaced by one
big one?Why?
(iv)Give the biological tem for the parts mentioned
in 'iv'above.
(vi)State the functions of the ear.
Q 1
(f) Given below is a simple diagram of the human kidney cut open
longitudinally . Answer the following questions :
1. Give the definition of excretion
.
2. Name the units of kidney .
3. Why does the cortex of the
kidney show a 'dotted' appearance ?
4. Mention two functions of
the kidney .
5. Write two differences in the composition of the
blood flowing through blood vessels A and B.
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