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[A]: Xylem translocates water and dissol...

[A]: Xylem translocates water and dissolved mineral salts from the roots to the rest of the plant.
[R]: Phoem translocates dissolved organic and inorganic solutes

A

1)If both A and R are true and R is the correct explanation of A

B

2)If both A and R are true but R is not the correct explanation of A

C

3)If A is true and R is false

D

4)If both A and R are false

Text Solution

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The correct Answer is:
B
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If the quantity of electricity required to liberate 2.6267 g of gold from a solution of gold salt is used for the the electrolysis of CuSO_(4) solution in presence of copper anode, then 1.26 g of copper gets dissolved. Find the oxidation number of gold in the gold salt. [Cu=63, Au=197]

Which of the following statement are false ? (a) Most cells are tiny with volume range of 1-100 nm^(3) (b) Some cells have microvilli to increases the absorptive surface area (c) All cells arise from pre-existing cells (d) In plants, translocation of solutes is performed by xylem vessels and tracheids (e) According to cell theory, all cells arise from abiotic material

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Ar, organic compound (A), C_7H_8O is insoluble in aqueous NaHCO_3 but souble in NaOH. (A), on treatment with bromine water rapidly forms compound (B), C_7H_5OBr_3 . Give structures of (A) and (B) . What will be (A), if , it does not dissolve in NaOH solution but shows reactions given above?

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The inner most distinict layer of the cortex is called endomermi...

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  2. [A]: Gramineous type of stomata are found in Gramineae and Cyperaceae....

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  3. [A]: lntercellular spaces are found in meristematic Tissue (R]: The ...

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  4. [A]: Monocot stem has collateral open vascu- lar bundle. [R]: Open ...

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  5. [A]: Root system in hydrophytes is poorly de- veloped. [R]: The con...

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  6. [A]: Aerenchyma is a characteristic of lithophyte. [R]: It is a spec...

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  7. [A]: Protostele is most simple primitive type of stele. [R]: Accordi...

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  8. [A]: Rubber is obtained from the latex of Hevea brasiliensis. [R]: B...

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  9. [A]: No fibres are found in plants. [R]: Xylem vessels are absent ...

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  10. [A]: Sclerenchyma cells are rarely found in plants. [R]: Sclerencym...

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  11. [A]: Hanstein's dermatogen is not equivalent to Haberlandt's Protoderm...

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  12. [A]: Trichomes may occur on all parts of a plant. [R]: Trichomes ei...

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  13. [A]: The vascular cambium is absent in monocots. [R]: The monocots ...

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  14. [A]: In the hydrophytes the Xylem is not differ- entiated into differe...

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  15. [A]: Dicot stem shows secondary growth. [R]: Tissue system is not d...

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  16. given below are assertion and reson. Point out if Assertion . In woo...

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  17. [A]: The inner most distinct layer of the cortex is called endodermis...

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  18. [A]: Sieve tube members have abundant cytoplasm but there is no nucleu...

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  19. Assertion : In collateral vascular bundles phloem is situated toward ...

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  20. [A]: Xylem translocates water and dissolved mineral salts from the roo...

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