Read the following statements.
Statement A: The contractile tissue which is present exclusively in the heart is unstriated and involuntary.
Statement B: Communication junctions called intercalated discs are present in the muscular tissue of intestines, heart, urinary bladder etc.
Select the correct option with respect to the above given statements.
1. Both statements A and B are correct.
2. Both statements A and B are incorrect.
3. Only statement A is correct.
4. Only statement B is correct.

Subtopic:  Cardiac Muscle & Smooth Muscle |
 70%
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Assertion (A): Cartilage and bone are rigid connective tissue.
Reason (R): Blood is a connective tissue in which plasma is the matrix.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Connective Tissue |
 71%
From NCERT
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Assertion (A): Mast cells in the human body release excessive amounts if inflammatory chemical which cause allergic reactions.
Reason (R): Allergens on reaching the human body stimulate mast cell in certain individuals.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Introduction to Animal & Epithelium Tissue |
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Assertion (A): Earthworms is hermaphrodite.
Reason (R): In earthworms, reciprocal cross fertilisation takes place
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
 
Subtopic:  Earthworm |
 60%
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Assertion (A): The alimentary canal of a frog is short.
Reason (R): Frog is carnivorous.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Frogs |
 94%
From NCERT
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Assertion (A): Tendon is universally found in all the bone joints.
Reason (R): Tendons connect bone joints.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Connective Tissue |
 65%
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Assertion (A): Urinary bladder is lined by transitional epithelium.
Reason (R): Transitional epithelium always keeps the bladder volume constant.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
 
Subtopic:  Glandular Epithelium & Cell Junction |
 63%
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Assertion (A): The cells of Connective tissue secretes fibre.
Reason (R): Blood also secretes fibres.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
 
Subtopic:  Connective Tissue |
 83%
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Assertion (A): Smooth muscles are involuntary.
Reason (R): These are controlled by autonomic nervous system.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Cardiac Muscle & Smooth Muscle |
 74%
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Assertion (A): Gap junction is somewhat similar to plasmodesmata.
Reason (R): Both are structures occur in animal system.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Glandular Epithelium & Cell Junction |
 68%
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