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Leaf Classification . 5th Grade Living Systems Investigation 2 “Vascular Plants” . Classification. Classify : scientists organize, or classify, things by putting them in groups based on similar properties or behaviors. Classification helps scientists think about concepts or efficiently. .
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Leaf Classification 5th Grade Living Systems Investigation 2 “Vascular Plants”
Classification • Classify: scientists organize, or classify, things by putting them in groups based on similar properties or behaviors. • Classification helps scientists think about concepts or efficiently.
How Leaves Are Classified • Classified by the basic pattern on veins • There are 3 patterns to help classify leaves: • Palmate • Pinnate • Parallel
Palmate Leaf • Several veins extending from the place where the leaf stem attaches to the leaf.
Pinnate Leaf • Pinnate Leaf: One large vein extending the length of the leaf with smaller veins branching off. • Pinna means feather, so pinnate leaf resembles a feather.
Parallel Leaf • Parallel: Many small veins running the length of the leaf. • Long, narrow leaves, like blades of grass, tend to have parallel veins.
Other Ways to Classify Leaves • Leaf shape (blade) • Kind of edge (margin) on the leaf • Kind of attachment to the stem (petiole) • Venation: Palmate, pinnate, and parallel