Xylem and Phloem Flashcards

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What is the main function of the xylem?

The xylem transports water and minerals from the roots to the stem and leaves.

How does the movement of substances in the xylem differ from the phloem?

Xylem moves substances unidirectionally (one way) upwards, while phloem moves substances both up and down the plant.

What are sieve plates and where are they found?

Sieve plates are end walls with pores in phloem cells that allow dissolved substances to flow through easily.

What is translocation and which plant vessel is responsible for it?

Translocation is the transport of dissolved sugars and amino acids, and it is carried out by the phloem.

What is the main difference between the cells in xylem and phloem?

A xylem consists of dead cells without cytoplasm or organelles, while a phloem is made up of living cells.

Why is the movement of substances in the phloem considered an active process?

The movement in the phloem requires energy for the active transport of sugars into the phloem, creating a pressure-driven flow towards sink locations.

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