Leaves. Leaf Anatomy Typical Dicot Leaf X-Section Palisade Parenchyma Spongy Parenchyma Vascular bundles Epidermis Cuticle Stoma Guard Cells.

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Presentation transcript:

Leaves

Leaf Anatomy

Typical Dicot Leaf X-Section Palisade Parenchyma Spongy Parenchyma Vascular bundles Epidermis Cuticle Stoma Guard Cells

Typical Monocot Leaf X-Section Xylem Phloem Bulliform Cells Stoma Epidermis Midvein Vein Bundle sheath cell

Leaf Stomata: Allow Gas Exchange Stomata in Zebrina leaf epidermis Guard cells with chloroplasts Stoma Subsidiary cells

Leaf Taxonomy

Opposite: 2 leaves at a node, on opposite sides of the stem Spiral: 1 leaf per node, with the second leaf being above the first but attached on the opposite side of the stem Whorled: 3 or more leaves at a node Leaf Arrangement on the Stem

Monocot Leaf

Dicot Leaf Spongy mesophyll Adaxial Epidermis Palisade mesophyll midvein midrib Abaxial Epidermis

Lilikoi; Passiflora edulis Tendrils Leaf modifications Spines Storage Common cactus finch, Galapagos sepals petals Leaf/ bract Petal-like

Indian Pipe Monotropa uniflora

Venus fly trap Silver sword Brighami rockii Australian pine Casuarina equisetifolia

World’s largest pitcher plant Nepenthes rajah Tree shrew What is going on?

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