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Thymus

Lymphocytes m...

Question

Lymphocytes mature into effector cells in

A

Bone marrow

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B

Spleen

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C

Thymus

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D

Blood

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Solution

The correct option is B Spleen
Bone marrow and thymus are Primary lymphoid organs where immature lymphocytes differentiate into antigen sensitive lymphocytes.

Spleen is secondary lymphoid organ where lymphocytes interact with antigens and become effector cells.

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Q. Assertion :Lymphocytes arise from bone marrow and present in the blood, lymph and serve as natural killer cells. Reason: Lymphocytes migrate to thymus, where they develop into T cells and begin to mature.

Q. Assertion :Lymphocytes arise from bone marrow and present in the blood, lymph and connective tissues. Reason: Lymphocytes migrate to thymus, where they develop into T cells and begin to mature.

Q. Following are the statements about B-lymphocytes. Identify which statements given below are correct?

I. They are a type of red blood cell.
II. Many B cells proliferate into cells called plasma cells that produce antibodies (proteins) necessary to fight off infections while other B cells mature into memory B cells.
III. B cells mature in the bone marrow.

Q. How many statements are true about T-lymphocytes in mammals?

I) T-lymphocytes can differentiate into different cell types during proliferation.
II) They originate in all lymphoid organs.
III) They can mature in all lymphoid organs.
IV) They can proliferate only in the thymus.

Q. B-lymphocytes mature in ____i___ and T-lymphocytes mature in __ii___.

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