NEET Exam > NEET Questions > Directions : In the following questions a st...
Start Learning for Free
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A): Bone marrow and thymus are primary lymphoid organs.
Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Directions : In the following questions a statement of assertion (A) ...
Bone marrow and thymus are primary lymphoid organs as here immature lymphocytes differentiate into antigen-sensitive lymphocytes.
View all questions of this test
Most Upvoted Answer
Directions : In the following questions a statement of assertion (A) ...
Assertion (A): Bone marrow and thymus are primary lymphoid organs.
Reason (R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.
The correct answer is option 'C'.
Explanation:
- The primary lymphoid organs are responsible for the production and maturation of lymphocytes, which are specialized white blood cells involved in the immune response.
- The bone marrow and thymus are considered primary lymphoid organs because they play a crucial role in the development and maturation of lymphocytes.
- The bone marrow is responsible for the production of B lymphocytes (B cells), while the thymus is responsible for the maturation of T lymphocytes (T cells).
- Lymphocytes are initially produced in the bone marrow. B cells mature in the bone marrow itself, while T cells migrate from the bone marrow to the thymus for further maturation.
- In the thymus, T cells undergo a process called education or selection, where they learn to recognize self-antigens and eliminate those that would cause an autoimmune response.
- After maturation, lymphocytes migrate from the primary lymphoid organs to secondary lymphoid organs, such as lymph nodes and spleen, where they can encounter antigens and initiate an immune response.
- The interaction of mature lymphocytes with antigens in secondary lymphoid organs leads to their activation and proliferation, resulting in the formation of effector cells that carry out specific immune functions.
- Therefore, the bone marrow and thymus are primary lymphoid organs because they are the organs where lymphocytes are produced, matured, and then migrate to secondary lymphoid organs to initiate immune responses.
- Hence, the assertion (A) is true as bone marrow and thymus are primary lymphoid organs.
- However, the reason (R) is false as it does not provide a correct explanation for the assertion. The reason states that matured lymphocytes migrate to these organs, interact with antigens, and proliferate to become effector cells, which is not accurate.
Reason (R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.
The correct answer is option 'C'.
Explanation:
- The primary lymphoid organs are responsible for the production and maturation of lymphocytes, which are specialized white blood cells involved in the immune response.
- The bone marrow and thymus are considered primary lymphoid organs because they play a crucial role in the development and maturation of lymphocytes.
- The bone marrow is responsible for the production of B lymphocytes (B cells), while the thymus is responsible for the maturation of T lymphocytes (T cells).
- Lymphocytes are initially produced in the bone marrow. B cells mature in the bone marrow itself, while T cells migrate from the bone marrow to the thymus for further maturation.
- In the thymus, T cells undergo a process called education or selection, where they learn to recognize self-antigens and eliminate those that would cause an autoimmune response.
- After maturation, lymphocytes migrate from the primary lymphoid organs to secondary lymphoid organs, such as lymph nodes and spleen, where they can encounter antigens and initiate an immune response.
- The interaction of mature lymphocytes with antigens in secondary lymphoid organs leads to their activation and proliferation, resulting in the formation of effector cells that carry out specific immune functions.
- Therefore, the bone marrow and thymus are primary lymphoid organs because they are the organs where lymphocytes are produced, matured, and then migrate to secondary lymphoid organs to initiate immune responses.
- Hence, the assertion (A) is true as bone marrow and thymus are primary lymphoid organs.
- However, the reason (R) is false as it does not provide a correct explanation for the assertion. The reason states that matured lymphocytes migrate to these organs, interact with antigens, and proliferate to become effector cells, which is not accurate.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?
Question Description
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?.
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A): Bone marrow and thymus are primary lymphoid organs.Reason(R): It is the organs, to which matured lymphocytes migrate, interact with antigens and then proliferate to become effector cells.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup