Plant Tissues

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  • Created by: a.bell
  • Created on: 26-10-15 19:37

Epidermal

What is it?

A single layered group of cells that cover the plant's leaves, flowers, roots and stem to form a boundary.

What does it do?

  • Protects against water loss.
  • Regulates gas exchange.
  • Secretes metabolic compounds.
  • Absorbs water and mineral compounds.
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Xylem and Phloem

Where are they found?

In the veins of the plant.

What does xylem do?

Moves water from the roots to the leaf.

What does phloem do?

Moves sap containg sucrose (produced by photosynthesis) out of the leaf to other parts of the plant.

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Mesophyll

What is it?

The main tissue in the leaf.

What does it do?

Mainly carries out photosynethesis.

Where is it found?

Between the upper and lower layer of the epidermis.

What is it made up of?

An upper palisade layer of tightly packed palisade cells for trapping sunlight.

AND

A lower, spongy layer where the cells are less tightly packed and are more rounded.

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