Solved MCQs of Biology Class 9
Which of the following blood vessels have oxygenated blood?
Pulmonary artery
Pulmonary vein
Superior vena cave
Inferior vena cave
A patient with blood group A can be given the blood of donor who has:
Blood group A or AB
Blood group A or O
Blood Group A only
Blood group O only
A cubic milimeter blood of male contains RBC:
5 – 5.5 million
4-4.5 million
3-4 million
None of the above
Exchange of materials between blood and surrounding tissues occurs in:
Arteries
Veins
Capillaries
All of these
Which of the followings are not Gramulocytes?
Neutrophils
Eosinophils
Monocytes
Basophils
Stomata close when guard cells:
Loss water
Gain chloride ions
Become turgid
Grain potassium ions
Capillaries are ………… micrometer in diameter.
7-8 micrometer
8-10 micrometer
8-14 micrometer
7-10 micrometer
Trace the pathway of water from the soil through the plant to be the atmosphere:
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
Rhesus factor was first identified in Rhesus ………….. .
Dog
Monkey
Cat
Gorilla
Which of the following chambers has the thickest walls in human heart?
Right atrium
Left atrium
Left ventricle
Right ventricle
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