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24 Cards in this Set
- Front
- Back
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Main characteristic of foliage leaves |
Flat and thin to absorb light and CO2 Thinly constrained Can't accumulate cells over time. |
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What are petiolate leaves? |
Leaves with a petiole |
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What are sessile leaves? |
Leaves that do not have a petiole. |
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What is the sheathing Leaf stem? |
Found in many monocots, protects the meristem |
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Parts of the leaf (6) |
Blade, vein, epidermis, stem, petiole, stipule |
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Simple vs. Compound leaves |
Simple leaves have one part compound leaves have more than |
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Advantages to compound leaves |
Can move in wind and water without tearing. Wind brings in more CO2. |
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Pinnate vs. Palmate leaves |
Pinnate goes in one direction, palmate goes in multiple directions |
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What veination do dicots have? |
Reticulate |
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What veination do monocots have? |
Parallel |
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What is the abscission zone? |
Cuts off the leaf at the appropriate time. |
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What do trichomes do? |
Reduce water loss and protect from insects |
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What do leaves do to reduce water loss |
Increase wax on epidermis |
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What is the function of Palisade mesophyll? |
Main Photosynthesizing cells of leaf |
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Structure of Palisade mesophyll |
Upper portion of mesophyll and one layer of cells thick |
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What is the function of spongy mesophyll? |
Allows CO2 to diffuse |
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What is the structure of spongy mesophyll? |
Lower portion of the mesophyll, open, Loosely packed |
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What is the midrib? |
Large strengthened veins along the midline of leaf |
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What are lateral veins? |
Branch off midrib and extend to the margins. |
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What are minor veins? |
Branch off from lateral veins |
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What do minor veins do? |
Active site of exchange between the mesophyll and the plant's vascular system. |
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What are the functions of the lateral veins? |
Transportation |
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What is the function of the midrib? |
Support |
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What are leaf traces |
Vascular bundles branching from stem |
