The theory put forth by Thaine $(1964)$ is of

  • A
    Protoplasmic streaming
  • B
    Transcellular streaming
  • C
    Osmosis
  • D
    Electro-osmosis

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Assertion : Long distance flow of photoassimilates in plants occurs through sieve tubes.
Reason : Mature sieve tubes have parietal cytoplasm and perforated sieve plates.

The prevalent view for the translocation of organic solute in plants is

Sinks are related to

$A$ few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?

Explain the mass flow hypothesis of transport in phloem.

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