Tuesday 10 March 2015

Biology SECTION D

1.   In which one of the following antibody formations takes place?

(a)    RBCs
(b)   Blood Platelets
(c)    Lymphoid organ
(d)   Donnan’s membrane

2.   Which one of the following is responsible for converting milk into curd?

(a)    Fungi
(b)   Bacteria
(c)    Virus
(d)   None of these

3.   Which of the following gases in the atmosphere is/ are responsible for acid rains?

1.       Oxides of sulphur
2.       Oxides of nitrogen
3.       Oxides of carbon
Select the correct answer using the codes given below

(a)     1 and 2
(b)   1 and 3
(c)    Only 2
(d)   All of these

4.   Which of the following disease is not caused by viruses?

(a)    Cholera
(b)   Chickenpox
(c)    Hepatitis
(d)   Measles

5.   Sandal wood tree is considered a
(a)    Total root parasite
(b)   Total stem parasite
(c)    Stem parasite
(d)   Partial root parasite

6.   Which one among the following gases readily combines with the hemoglobin of the blood?

(a)    Methane
(b)   Nitrogen Dioxide
(c)    Carbon monoxide
(d)   Sulphur dioxide

                                 7.   Which of the following are the risk factors in the transmission of the HIV infection?

1.       Smoking and drinking alcohol.
2.       Observing bad hygiene.
3.       Blood transfusion
4.       Unprotected sex

Select the correct answer using the codes given below?
(a)    1 and 3
(b)   2 and 4
(c)    1, 2 and 4
(d)   All of these

8.   Which one among the following gases readily combines with the hemoglobin of the blood?

(A)   Methane
(B)   Nitrogen dioxide
(C)   Carbon monoxide
(D)   Sulphur dioxide

9.   Human blood is a viscous fluid. This viscosity is due to

(a)    Proteins in blood
(b)   Platelets in plasma
(c)    Sodium in serum
(d)   RBC and WBC in blood

10.   In terms of organic evolution, which one of the following is more advanced than the other three?

(a)    Pigeon
(b)   Bat
(c)    Ostrich
(d)   Vulture

Answer:

1.       C
2.       B
3.       A
4.       A
5.       B
6.       C
7.       B
8.       C
9.       A
10.   B

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