Solved MCQs of Biology Class 9 Chapter 9

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Solved MCQs of Biology Class 9


Pus is formed from which of the following dead white blood cells?
Lymphocytes
Eosinophils
Monocytes
Basophils

What is correct about human red blood cells?
Have limited life span
Are capable of phagocytosis
Produce antibodies
Are multinucleate

Stomata close when the guard cells:
Lose water
Gain chloride ions
Become turgid
Gain potassium ions

Which of the following is a type of leukocyte?
Macrophage
Eosinophil
Monocyte
All of the above

Leukemia is a disease in which leucocytes increase …………………. .
Normally
Abnormally
Both
None

ABO blood group system was discovered by:
T.H Morgan
Hans krebs
Winhelm kuhne
Karl landsteiner

Which of the following protein takes in part in blood clotting:
Albumin
Prothrombin
Fibrinogen
Fibrin

Which of these statements is correct about the circulatory system?
It transports hormones
Capillaries have thicker walls than veins
Systemic circulation carries blood to and from the lunges
All of the above are true

During rain the rate of transpiration is …………. .
Minimum
Maximum
Both
None

Which of the following tissue layer us found in all blood vessels?
Smooth muscle
Endothelium
Skeletal muscle
Connective tissue

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