Question # 1

When stomatal opening reduce in sixe, the rate of transpiration ............... .

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Transpiration

Transcription

Translation

Allof above

When do the atria contract?

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Before diastole

After systole

During diastole

During systole

Blood circulation in humans being was first described by Muslim Anatomist ............... .

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William Harvey

Ibn-al-Nafees

Bu Ali Seena

Ibn Al Haitehm

Stomata close when guard cells:

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Loss water

Gain chloride ions

Become turgid

Grain potassium ions

The amount of plasma in blood is:

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35%

45%

55%

65%

In experiments to show transpiration from lead surfaces cobalt chloride paper changes its colour from:

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Pink to blue

Blue to pink

Pink to colourless

Colourless to pink

Stomata close when the guard cells:

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Lose water

Gain chloride ions

Become turgid

Gain potassium ions

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

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

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Glucose

Sucrose

Starch

Proteins

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

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72

73

70

75

A cubic millimeter of blood contain about ............. million RBCs.

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5

10

15

20

ABO blood group system was discovered in 1901 by .................. .

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Camillo

Karl land Steiner

Robert Hooke

Mathias Schleiden

ABO blood group system was discovered by:

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T.H Morgan

Hans krebs

Winhelm kuhne

Karl landsteiner

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