Question

Which elements of the above tissue take part in translocation.
Companion cell and sieve tube
companion cell and parenchyma
Sieve tube and Sieve plate
Non of these​

Answer 1

Sieve tube and Sieve plate

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Answer 2

Trancolation through the phloem is dependent on metabolic activity of the phloem cells (in contrast in transport in the xylem).

• Chilling it's petiole shows the rate at which food is transported out of the leaf (right)
• Oxygen lack also depresses it.
• Killing the phloem cells puts on end to it.

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