Question # 1

Which of the following is a function of human blood?

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It regulates body temperature

It transports wastes

It provides defence

All of the above

Which of the followings in not true about the opening and Closing of Stomata?

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Light helps in the opening and closing of stomata

K⁺ ions are responsible for the opening and closing of stomata

The osmosis of water is responsible for the opening and closing of stomata

None for these

............. 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

A patient with blood group A can be given the blood of donor who has;

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Blood group A or AB

Blood group A or O

Blood group A only

Blood group O only

Which of the following protein takes in part in blood clotting:

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Albumin

Prothrombin

Fibrinogen

Fibrin

During rain the rate of transpiration is ............. .

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Minimum

Maximum

Both

None

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

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Glucose

Sucrose

Starch

Proteins

The rate of transpiration is increased when:

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Low light

Temperature decrease

Humidity increased

None of these

Find the correct path of blood circulation.

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Left atrium, left ventricle, lungs, right atrium, right ventricle, body

Right atrium, right ventricle, lungs, left atrium, left ventricle ,body

Left atrium, left ventricle, right atrium, right ventricle, lungs body

Right atrium, lungs, right ventricle, left atrium, body , left ventricle

Which of the following is a type of leukocyte?

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Macrophage

Eosinophil

Monocyte

All of the above

When do the atria contract?

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Before diastole

After systole

During diastole

During systole

Arteries can be divided into ........... types.

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Two

Three

Four

Five

The exchange of materials between the blood and the surrounding tissues occurs in:

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Arteries

Veins

Capillaries

All 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

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