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Question

All the following statements are correct about bones, but one is wrong. Which one is wrong?

A

Bones have a hard and non-pliable ground substance rich in calcium salts and collagen fibres which give bone its strength

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B

Red bone marrow present in diaphysis is the site of production of blood cells

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C

One osteocyte is present in one lacuna

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D

Haversian canals contain nerves and blood vessels

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Solution

The correct option is B Red bone marrow present in diaphysis is the site of production of blood cells
Red bone marrow is present in epiphysis not in the diaphysis. Diaphysis contains yellow bone marrow. So the correct option is 'red bone marrow present in diaphysis is the site of production of blood cells'

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Similar questions

Consider the following statements (i)- (iii), each with one or two blanks.
(i) Bones have a hard and non-pliable ground substance rich in _____ (1) and _____ (2) which give bone its strength,
(ii) Some of the columnar or cuboidal cells get specialised for secretion and are called ______ (3) epithelium
(iii) ______ (4) junctions help to stop substances from leaking across a tissue.
Which one of the following option, gives the correct fill ups for the respective blanks from (1) to (4) in the statements?

Q. Assertion :Haversian canals run longitudinally in the mammalian bone. Reason: Haversian canals contain blood vessels and nerves. Each canal supplies the lamellae of its own Haversian system.

Q. Assertion :Bone has very hard matrix whereas cartilage has pliable matrix. Reason: Bone has calcium salts in its matrix whereas cartilage has chondroitin salts in its matrix.

Q. Select the correct option:

Consider the following four statements (i)- (iv) and select the correct option stating which ones are true (T) and which ones are false (F)
(i) The epithelium of proximal convoluted tubule (PCT) of nephron in the kidney has microvilli.
(ii) Simple epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts.
(iii) The wall of internal organs such as the blood vessels, stomach and intestine contains skeletal muscle.
(iv) Bone marrow in some bones in the site of production of blood cells.

Q. Which one of the following statements are wrong?
(a) Leucocytes disintegrate in spleen and liver.
(b) RBC, WBC and blood platelets are produced by the bone marrow.
(c) Neutrophils bring about destruction and detoxification of toxins of protein origin.
(d) Important function of lymphocytes is to produce antibodies.

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