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In old sieve tubes at the end of growing...

In old sieve tubes at the end of growing season, which of the following gets deposited over sieve plate to regulate sugar transport :

A

P-protein

B

Callose

C

Lignin

D

ABA

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-ANATOMY OF FLOWERING PLANTS -ASSIGNMENT SECTION B Objective Type Questions
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  2. Find set of cells connected by pit fields between their common longitu...

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  3. In old sieve tubes at the end of growing season, which of the followin...

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  4. Parenchymatous structure with intercellular spaces is

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  5. Select correct features w.r.t. trichomes in shoot system Usually uni...

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  6. The pericycle of roots is never sclerenchymatous because it

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  7. Tissue commonly known as passport point or biological check post is ch...

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  8. Seat of origin of lateral root and formation of cork cambium are featu...

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  9. Centripetal and centrifugal xylems are important features of

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  10. Memebers of Winteracae, Tetracentraceae and trochodendraceae

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  11. Which of the following vascualr bundles are always open?

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  12. The vascular bundlies in the stems of several dicots are conjoint, col...

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  13. Which is not true for monocot stem ?

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  14. Vascular bundles are conjoint, collateral, endarch and lack cambium be...

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  15. Select a set having correct match

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  16. Monocot stem differs from dicot stem in having

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  17. Vascular cambium is a meristematic layer that cuts off

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  18. Derivatives of the secondary meristem in the steler region are

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  19. What is the position of oldest secondary phloem ?

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  20. Youngest layer of secondary xylem in wood of dicot stem is located jus...

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