characteristics to cc are two types of vascular tissue i aracteristics to compar

Question

characteristics to cc are two types of vascular tissue i aracteristics to compare contrast in plants. Choose three of the following traits. (6-8 sentences or a large Venn diagr General location within plant ste 7. Xylem and c and contrast these two types of tissues, stating how xylem and are similar and with bullet points) erent for your chosen General function Relative abundance following secondary growth lowing secondary growth Relative size (diameter of c cell status at maturity (alive or dead) Defense mechanisms including callose an Presence of companion cells

Explanation / Answer

General Function:

Xylem- Transporting water and minerals from roots to shoots, leaves, flowers, fruits etc.

Phloem- Transports the organic compounds made in photosynthesis ( glucose, sucrose) to different parts of the plant.

Relative abundance following secondary growth:

After secondary growth the layer of secondary xylem at the inner rings pf the trunk is much thicker than the secondary phloem at the outer ring.

Cell status at maturity:

Xylem cells at maturity have thick lignified wall and becomes dead.

Phloem cells are alive at maturity and contains cell sap.

General location within plant stem:

Xylem is present in the inner ring of the stem

Phloem is present at the outer ring of the stem

Presence of companion cells

Xylem do not have any companion cells as the cells are dead at maturity

Phloem have companion cells to provide nutrition to the Sieve cells( through which main conduction takes place.)

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