29 terms

Plant Science - Stem and leaf parts

Identify different parts of leaves, vein patterns, tips, blade shapes, simple vs. compound, bases, margins, and leaf arrangements on twig
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Terms in this set (...)

vein
Veins move water , minerals and nutrients in and out of the leaf
margin
the outer edge of the leaf blade
blade
a large flat structure that is designed to capture the greatest amount of light
petiole
the leaf stem
simple leaf
Consists of a single leaf blade and petiole
compound leaves
are made of a petiole and two or more leaflets
smooth/entire margin
a smooth edge to a leaf
Serrated margin
A leaf margin with edges like tiny jagged teeth
lobed margin
A leaf that has deep indentations around the edge, creating lobes
alternate leaves
Leaves are alternated or staggered along the stem
opposite leaves
when two leaves are directly across from each other
whorled leaves
when leaves arise from the same point on the stem
Terminal bud
leaf scar
Whats left when the leaf falls off
Axillary bud
an embryonic shoot located in the axil of a leaf.
Phloem
Moves sugar and glucose from the leaves down through the plant
Xylem
Moves nutrients up from the roots
Stems
Structures which supports buds and leaves and conduct nutrients and water to all parts of the plant
Whats the function of leaves
To do photosynthesis
The expanded thin structure on either side of the midrib
Blade
The stalk that supports the leaf blade
Petiole
Epidermis
The top and bottom layer of thickened cells which protect the rest of the leaves
Guard cells
Guards the interior of the leaf and regulate the passage of water, oxygen, and carbon dioxide
Petiole
Leaf axil
Midrib
the main vein of a leaf
Apex
Stem
Stomata
Openings that allow for gas exchange

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