Photosynthesis
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16 terms
Terms | Definitions |
|---|---|
 Cuticle | waxy protective layer of the leaf (prevents dehydration) |
| Upper Epidermis | below cuticle and functions in protection |
| Palisade mesophyll cell | column shaped cells containing many chloroplast. Found under the upper epidermis [most photosynthesis occurs] |
| Spongy mesophyll | loosely packed, irregular shaped cells. surrounded by air spaces- allows CO2, O2 and water vapor to flow around cells |
| Vascular tissue | made up of xylem and phloem found in the midrib and veins of the leaf |
| Stoma | openings underneath the leaf. Allows gases to enter and exit the leaf (CO2, O2, H2O vapor) |
| Guard cells | located on sides of the stoma and open and close to regulate the size of the stoma opening |
| Lower Epidermis | single layer of dermis tissue underneath the leaf |
| Chloroplast | site of photosynthesis |
| Photolysis | split an H2O into H and O2 |
| Xylem | Carries H2O up the stems |
| Phloem | carries sugars made by plant |
| Pigments | traps light |
| Chlorophyll | a pigment that traps light during photosynthesis |
| Grana | are stacks of disk like structures in chloroplast (site of light reactions) |
| Thylakoids | are individual disk in grana |
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