Question:
Assertion (A): Granulocytes are called polymorph-nuclear leucocytes
Reason (R): Nucleus of granulocytes is divided into many lobes and assumes different shapes
Assertion (A): Granulocytes are called polymorph-nuclear leucocytes
Reason (R): Nucleus of granulocytes is divided into many lobes and assumes different shapes
Reason (R): Nucleus of granulocytes is divided into many lobes and assumes different shapes
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Polymorph-nuclear = multilobed nucleus (especially neutrophils).
Updated On: Jul 18, 2026
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is not the correct explanation of A
- A is correct but R is wrong
- A is wrong but R is correct
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The Correct Option is A
Solution and Explanation
Step 1: Understanding granulocytes.
Granulocytes are a type of white blood cells present in blood. They include neutrophils, eosinophils, and basophils. These cells are part of the innate immune system.
Step 2: Meaning of polymorph-nuclear leucocytes.
The term polymorph-nuclear leucocytes refers to white blood cells having a nucleus with multiple shapes or lobes. This structural feature is characteristic of granulocytes, especially neutrophils.
Step 3: Structure of granulocyte nucleus.
Granulocytes possess a nucleus that is segmented into two or more lobes. This lobulated structure gives the nucleus a variable or polymorphic appearance under the microscope.
Step 4: Evaluation of Assertion (A).
Assertion A is correct because granulocytes are indeed referred to as polymorph-nuclear leucocytes due to their lobed nuclear structure. This is a standard classification in hematology.
Step 5: Evaluation of Reason (R).
Reason R is also correct because the nucleus of granulocytes is divided into multiple lobes and can take different shapes. This directly explains the term polymorph-nuclear.
Step 6: Link between A and R.
Since the lobed nature of the nucleus (R) is the reason granulocytes are called polymorph-nuclear leucocytes (A), R correctly explains A.
Granulocytes are a type of white blood cells present in blood. They include neutrophils, eosinophils, and basophils. These cells are part of the innate immune system.
Step 2: Meaning of polymorph-nuclear leucocytes.
The term polymorph-nuclear leucocytes refers to white blood cells having a nucleus with multiple shapes or lobes. This structural feature is characteristic of granulocytes, especially neutrophils.
Step 3: Structure of granulocyte nucleus.
Granulocytes possess a nucleus that is segmented into two or more lobes. This lobulated structure gives the nucleus a variable or polymorphic appearance under the microscope.
Step 4: Evaluation of Assertion (A).
Assertion A is correct because granulocytes are indeed referred to as polymorph-nuclear leucocytes due to their lobed nuclear structure. This is a standard classification in hematology.
Step 5: Evaluation of Reason (R).
Reason R is also correct because the nucleus of granulocytes is divided into multiple lobes and can take different shapes. This directly explains the term polymorph-nuclear.
Step 6: Link between A and R.
Since the lobed nature of the nucleus (R) is the reason granulocytes are called polymorph-nuclear leucocytes (A), R correctly explains A.
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