By cutting the ring of phloem,which of the following processes is affected?

  • A
    Downward flow of sugars
  • B
    Upward flow of salts
  • C
    Distribution of hormones
  • D
    All the above

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Similar Questions

Study the following statements and choose the correct option$(s)$ from the codes below:
$I$. Root pressure provides a light push in the overall process of water transport.
$II$. Root pressure causes the flow of water faster through xylem than it can be lost by transpiration.
$III$. In symplast pathway,water moves exclusively through the cell wall and intercellular spaces.
$IV$. Guttation is a cause of transpiration pull.
$V$. Most plants fulfill their water requirement by transpiration pull.

Which of the following statements are correct regarding the factors affecting the absorption of water by plants?
$(i)$ In plants,the rate of water absorption is minimum at a soil temperature of $20^{\circ}C$ to $30^{\circ}C$.
(ii) The presence of capillary water is essential in the soil.
(iii) Poorly aerated soil shows a poor absorption rate.
(iv) $A$ low transpiration rate accelerates the rate of absorption of water in irrigated soil.
$(v)$ $A$ high concentration of solutes in soil water reduces the rate of absorption of water.

Which of the following is mismatched regarding the properties of water and their biological significance?

$A$: There is an indirect relationship between the rate of respiration and water absorption.
$R$: Increased metabolism increases mineral uptake.

Examples of bulk flow by a positive hydrostatic pressure gradient and a negative hydrostatic pressure gradient are

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