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Assertion (A): Seive tubes are made up o...

Assertion (A): Seive tubes are made up of sieve plates that help in conduction.
Reason (R): Phloem parenchyma gives mechanical support.

A

Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

B

Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.

C

Assertion is true and Reason is false.

D

Assertion is false and Reason is true.

Text Solution

AI Generated Solution

To solve the assertion and reason question, we will analyze both statements step by step. ### Step 1: Analyze the Assertion (A) The assertion states that "Sieve tubes are made up of sieve plates that help in conduction." - **Explanation**: Sieve tubes are indeed a component of phloem tissue in plants. They are responsible for the transport of nutrients, particularly sugars, throughout the plant. Sieve plates are specialized structures at the ends of sieve tube elements that facilitate the flow of sap from one sieve tube to another. Therefore, this assertion is **true**. ### Step 2: Analyze the Reason (R) ...
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PEARSON IIT JEE FOUNDATION-TISSUES -MASTERING THE CONCEPTS (ASSERTIONS AND REASONS )
  1. Assertion (A): Lateral meristems help in secondary growth of the plant...

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  2. Assertion (A): Parenchyma is responsible for wound healing regeneratio...

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  3. Assertion (A): Aerenchyma is the chief anatomical adaptation of hydrop...

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  4. Assertion (A): Young stems and petioles of dicots bend but do not brea...

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  5. Assertion (A): Young stems and petioles of dicots bend but do not brea...

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  6. Assertion (A): Guttation occurs throughout the day in plants. Reason...

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  7. Assertion (A): Complex tissues are made up of more than one type of ce...

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  8. Assertion (A): Outgrowths of parenchymatous cells on xylem vessels are...

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  9. Assertion (A): Tyloses are considered as vascular plugs of plants. ...

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  10. Assertion (A): Seive tubes are made up of sieve plates that help in co...

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  11. Assertion (A): Lymph acts as a middle man between blood and tissue flu...

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  12. Assertion (A): Areolar tissue supports internal organs and helps in ti...

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  13. Assertion (A): External ear lobe shows high degree of flexibility. ...

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  14. Assertion (A): Hyaline cartilage is the weakest of all types of cartil...

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  15. Assertion (A): Skeletal muscles show rhythmic contractions and relaxat...

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  16. Assertion (A): The main body of neuron is called dendron. Reason (R)...

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  17. Assertion (A): Epithelial tissue lining the urinary bladder is transit...

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  18. Assertion (A): Blood is known as fluid connective tissue. Reason (R...

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