'Photosynthetic tissue' presentation slideshows

Carolus Linnaeus - late 18thC

Carolus Linnaeus - late 18thC. Species Plantarum 1753 Systems Naturae 1767 - (24) major categories of plants (Divisions) - (23) vascular ( Phanerogams ); - (1) non-vascular & vascular ( Cryptogams ). K: Plantae - Ordovician - Non-vascular - Silurian - Vascular.

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Plant Science

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Aim - Leaves and the work they do.

Aim - Leaves and the work they do. The thin flat part of a leaf is called the BLADE. It is attached to the stem by the leaf stalk aka the PETIOLE. The outermost cell layer of the leaf is the EPIDERMIS , which protects the leaf from injury. .

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