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When beet root cylinders are washed and ...

When beet root cylinders are washed and then placed in cold water, anthocyanin does not come out. This indicates that most likely the plasme membrane is

A

permeable to anthocyanin

B

impermeable to anthocyanin

C

differentially permeable to anthocyanin

D

dead structure

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The correct Answer is:
B
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Beet root if kept in cold water anthocyanin does not come out due to plasma membrane

[A]: In washed beet root cylinders, betacyanin pigment does not come out when placed in cold water. [R]: Because cell membrane is impermeable to betacyanin

Pavni's mother had just washed all the white clothes. She was telling her friend that the whiteness of white clothes was decreasing with every wash and even new white clothes appeared to be like old ones after a few washings. Pavni, who is a student of class 10, was listening to her mother's complaint. Pavni then went to the market and purchased a particular 'dye'. She asked her mother to dissolve a little of this dye in a bucketful of water and soak the washed white clothes in the solution of dye for some time. Pavni's mother did the same. After sometime, the clothes were taken out of the bucket, rinsed well and spread on clothes line for drying. Pavni's mothers observed that the whiteness of washed white clothes had increased a lot after applying a little of the dye. Pavni's mother did not know why on applying little of a certain dye to washed white clothes, their whiteness had increased manifolds. Pavni explained everything to her mother. (a) What could be the 'dye' applied by Pavni's mother to the washed white clothes by dissolving in water ? (b) What does the application of this dye make the washed white clothes look even more white (or shining white) ? Explain. (c) What values are displayed by Pavni in this episode ?

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ARIHANT NEET-TRANSPORT IN PLANTS -Chapter exercises A. Taking it together (Assorted Questions of the Chapter for Advanced Level Practice )
  1. Which of the following statement is correct ?

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  2. A man supplied excess fertiliser and watered the grass well. After som...

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  3. When beet root cylinders are washed and then placed in cold water, ant...

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  4. Potato slices are immersed in a series of solutions of different osmot...

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  5. The cell A has an osmotic potential of -20 bars and a pressure potenti...

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  6. The OP and TP of two pairs of cells A-B and X-Y are as under Cell ...

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  7. If cohesion-tension transpiration pull theory is correct, a break in w...

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  8. The process of guttation takes place

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  9. The protoplasmic streaming hypothesis for food translocation has not b...

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  10. If a cell A with DPD=5 bars is connected to cells B,C and D whose OP a...

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  11. The term Tensile strength represents that there is

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  12. Atmospheric pressure theory was rejected for the ascent of sap because

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  13. The main mechanism of determining the direction of short distance tran...

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  14. Which of the following method of transport across a membrane does not ...

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  15. A bottle filled with previously moistened Mustard seeds and water was ...

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  16. Which of the following is not true for carrier molecules involved in f...

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  17. The translocation of orgainc solutes through phloem is bidirectional b...

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  18. If a plant cell is placed in deionised water the water potential of th...

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  19. Which of the following statementis correct ?

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  20. How many of these events occur during stomatal opening in guard cells ...

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