Question # 1

Which of these statements is correct about the circulatory system?

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It transports hormones

Capillaries have thicker walls than veins

Systemic circulation carries blood to and from the lunges

All of the above are true

Platelets life span in about ........... days.

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6-7

7-8

5-6

8-9

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 ions are involved in opening and closing of stomata?

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Potassium ions

Chloride ions

Sodium ions

Iodide ions

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

Normal rate of heart beat in a healthy human being is ......... beats per minute.

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72

73

70

75

Which of the following tissue layer is found in all blood vessels?

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Smooth muscle

Endothelium

Skeletal muscle

Connective tissue

Which of the following is a type of leukocyte?

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Macrophage

Eosinophil

Monocyte

All of the above

Trace the pathway of water from the soil through the plant to be the atmosphere:

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Endodermis, cortex , epidermis , xylem , intercellular spaces in mesophyll, stomata

Epidermis, endodermis , phloem, cortex of leaf, intercellular spaces of mesophyll, stomatta

Root hairs, epidermis , Cortex, xylem, endodermis, intercellular spaces in mesophyll, stomata

Root hairs, Cortex, endodermis ,xylem,intercellular spaces in mesophyll, stomata

Plants form beneficial relationships with soil bacteria fungi in order to:

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Avoid diseases

Absorption of minerals

Transpire more water

All of these

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

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

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

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Normally

Abnormally

Both

None

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