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Xylem translocates :...

Xylem translocates :

A

Water only

B

Water and mineral salts only

C

Water, mineral salts and some organic nitrogen only

D

Water, mineral salts, some organic nitrogen and hormones

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he phloem translocates a variety of

Assertion :- None of the xylem and phloem translocation is of exclusive nature. Reason:- Small amount of exchange of materials does take place between xylem and phloem

Xylem is associated with translocation of

(a) What is transpiration ? (b) What do you mean by 'translocation' with respect to transport in plants ? (c) Which plant tissue is involved in translocation: xylem or phloem ?

statement - A: Xylem is associated with translocation of mineral salts, some organic nitrogen and hormones. statement - B: Phloem translocates a variety of organic and inorg anic solutes mainly from sink to source.

The translocation of solute is

Consider the following statements 1. Xylem vessels are semi-permeable 2. Sieve tubes translocate only solutes 3. Xylem vessels do not have a turgor pressure 4. Companion cells help in maintaining pressure gradient in the sieve tubes . Which of the statements given above are correct ?

TRUEMAN BIOLOGY-NEET (UG) -2019 (Conducted by CBSE on 05-05-2019)-MCQs
  1. Which of the following pair of oragnelles does not contain DNA?

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  2. What is the genetic disorder in which an indi viduaI has an overall ma...

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  3. Xylem translocates :

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  4. Which of the following pairs of gases is mainly responsible for green ...

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  5. Which of the following protocols did aim reducing emission of chlorofl...

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  6. In some plants, the female gamete develops into embryo without fertili...

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  7. Which of the following sexually transmitted diseases is not completely...

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  8. Which of the following immune responsible for rejection of kidney gra...

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  9. Which of the following factors is responbilble the formation of concen...

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  10. Which of the following features of genetic code does allow bacteria to...

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  11. Which of the following statements is not correct

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  12. The concept of "Omnis cellula-e cellula"regard cell division was first...

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  13. Use of an artificial kidney during hemodialysis may result in : Nit...

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  14. What is the direction of movement of sugars in phloem?

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  15. Which of the following muscular disorders is inherited?

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  16. Consider following features: (a) Organ system level of organisation ...

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  17. The frequency of recombination between gene present on the same chromo...

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  18. Following statements describe the characteristics of the enzyme Restri...

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  19. Which of the following statements is incorrect

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  20. Placentntion, in which ovules develop on the inner wall of the ovary o...

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