Q. 1. An element playing important role in nitrogen fixation is :
- Molybdenum
- Copper
- Manganese
- Zinc
Answer: (1)
Q. 2. Select the correct statement from the ones given below:
- Barbiturates when given to criminals make them tell the truth
- Morphine is often given to persons who have undergone surgery as a pain killer.
- Chewing tobacco lowers blood pressure and heart rate
- Cocaine is given to patients after surgery as it stimulates recovery
Answer: (2)
Q. 3. Listed below are four respiratory
capacities (a − d) and four jumbled respiratory volumes of a normal human adult:
Respiratory Respiratory
capacities volumes.
- Residual volume 2500 mL
- Vital capacity 3500 mL
- Inspiratory reserve volume 1200 mL
- Inspiratory capacity 4500 mL
Which one of the following is the correct matching of two capacities and volumes?
- (b) 2500 mL, (c) 4500 mL
- (c) 1200 mL, (d) 2500 mL
- (d) 3500 mL, (a) 1200 mL
- (a) 4500 mL, (b) 3500 mL
Answer: (3)
Q. 4. Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:
- Xenogamy
- Geitonogamy
- Karyogamy
- Autogamy
Answer: (2)
Q. 5. ABO blood groups in humans are controlled by the gene I. It has three alleles − IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?
- Three
- One
- Four
- Two
Answer: (3)
Q. 6. Low Ca++ in the body fluid may be the cause of:
- Tetany
- Anaemia
- Angina pectoris
- Gout
Answer: (1)

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