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PARTS OF THE PLANT Roots • These are important for 2 reasons: a) To anchor the plant in the soil b) To absorb water and nutrients like nitrates, sulphates, dissolved magnesium, iron etc Tap root Lateral (side) roots Root hairs • These are tiny hairs that are found near the growing tips of the roots. • They look like cotton wool • They provide a very large surface area for absorbing water from the soil Root hairs Stomata • These are tiny holes in the lower epidermis (skin) of the leaf. They let the gases, (carbon dioxide and oxygen) enter and exit the leaf. • They also let water evaporate from the leaf • They can open and close • They will CLOSE when the plant needs to keep water in the plant when the conditions are dry • Stoma (singular) Stomata (plural) Leaf veins There are 2 kinds of vessels or tubes inside the veins. XYLEM • These are tubes that transport water and minerals from the roots up through the rest of the plant to the leaves PHLOEM • These are tubes that transport food from the leaves to other parts of the plant. (Food flows in the phloem)