Question # 1

............. is the movement of molecule from a region of higher concentration to a region of lower concentration.

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Osmosis

Diffusion

Both

None

Which of the following is a type of leukocyte?

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Macrophage

Eosinophil

Monocyte

All of the above

In most plants, the food is transported in the form of:

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Glucose

Sucrose

Starch

Proteins

A cubic milimeter blood of male contains RBC:

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5 - 5.5 million

4-4.5 million

3-4 million

None of the above

ABO blood group system was discovered by:

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T.H Morgan

Hans krebs

Winhelm kuhne

Karl landsteiner

Leukemia is a disease in which leucocytes increase ...................... .

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Normally

Abnormally

Both

None

The amount of plasma in blood is:

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35%

45%

55%

65%

According to pressure flow mechanism which is the actual force behind the movement of food in phloem?

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Drop in the pressure at the sink end

Gain of water at the sink end

Osmotic pressure

All of these

There is separation of oxygenated and deoxygenated blood in birds and mammals because:

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The ventricles are completely divided

The ventral aorta is divided into aortic and pulmonary trunk.

The aortic arch is divided into two systemic arches.

None of the above

Which of the following chambers has the thickest walls in human heart?

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Right atrium

Left atrium

Left ventricle

Right ventricle

Stomata close when the guard cells;

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Lose water

Gain chloride ions

Became turgid

Gain potassium ions

Blood is composed of ................. parts.

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One

Two

Three

fOUR

The death of the heart tissue is called:

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Arterioclerosis

Atherosclerosis

Myocardial infarction

Thalassemia

Plasma contains .................. % water.

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10%

7%

90%

2%

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