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$ Weak stems which can climb a support w...

$ Weak stems which can climb a support without any climbing organs are called Twiners.
! Some Twiners have clinging roots.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

Verified by Experts

The correct Answer is:
C
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ Stilt roots grow obliquely into soil. ! Respiratory roots are nega...

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  2. $ Those lateral buds which are near the apical bud are called dormant ...

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  3. $ Weak stems which can climb a support without any climbing organs are...

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  4. $ The method of arrangements of leaves on a stem is calle Aestivation ...

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  5. $ Phylloclade is a stem modification. ! There are present flowers on...

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  6. $ Xylem is a simple permanent tissue. ! Xylem is present in Bryophyt...

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  7. $ Sieve tubes have "P" proteins. ! In gymnosperms, sieve tubes are a...

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  8. $ Xylem condition in roots is exarch ! Xylem has four different type...

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  9. $ Secondary growth occurs in those plants which have closed vascular b...

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  10. $ Leaves of monocots are amphistomatic. ! Dicot leaf has dimophic ce...

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  11. $ In osmosis, semipermeable membrane is a must. ! Cell wall is semip...

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  12. $ "Transpiration pull Theory" was proposed by Dixon and Joly . ! Los...

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  13. $ Water potential of distilled water is zero. ! C(2) cycle is also c...

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  14. $ those subtances which reduce the rate of transpiration are called tr...

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  15. $ Chlorosis means destruction or the loss of chlorophyll pigments. ...

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  16. $ The phenomenon of soil-less culture of plants is called Hydroponics....

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  17. $ Flower of Rafflesia is largest sized. ! Large flowers have wind po...

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  18. $ Insectivorous plants get nitrogenous nutrition from the insects. ...

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  19. $ Process of separation of photosynthetic pigments is called chromatog...

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  20. P(680) is calld PS II ! C-4 plants hav photorespiration.

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