1 |
A patient with blood group A can be given the blood of donor who has; |
- A. Blood group A or AB
- B. Blood group A or O
- C. Blood group A only
- D. Blood group O only
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2 |
The rate of transpiration is increased when: |
- A. Low light
- B. Temperature decrease
- C. Humidity increased
- D. None of these
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3 |
Which of the following chamber has the thickest walls in human heart? |
- A. Right atrium
- B. Left atrium
- C. Left ventricle
- D. Right ventricle
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4 |
Plasma constitute about ............. %. |
- A. 50%
- B. 55%
- C. 40%
- D. 45%
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5 |
The exchange of materials between the blood and the surrounding tissues occurs in: |
- A. Arteries
- B. Veins
- C. Capillaries
- D. All of the above
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6 |
Which of the followings is area of supply of blood in plants? |
- A. Leaf
- B. Stem
- C. Fruit
- D. All
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7 |
There is separation of oxygenated and deoxygenated blood in birds and mammals because: |
- A. The ventricles are completely divided
- B. The ventral aorta is divided into aortic and pulmonary trunk.
- C. The aortic arch is divided into two systemic arches.
- D. None of the above
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8 |
In most plants the food is transported in the form of: |
- A. Glucose
- B. Sucrose
- C. Starch
- D. Proteins
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9 |
Capillaries are ............ micrometer in diameter. |
- A. 7-8 micrometer
- B. 8-10 micrometer
- C. 8-14 micrometer
- D. 7-10 micrometer
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10 |
Stomata close when the guard cells; |
- A. Lose water
- B. Gain chloride ions
- C. Became turgid
- D. Gain potassium ions
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