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Plant Functions/Def
| Term | Definition |
|---|---|
| Lower epidermis | epidermal cells on the lower leaf and contains most of the stomata |
| Upper epidermis | epidermal cells on the upper leaf and contains less of the stomata |
| Epidermis | Herbacious outermost cells that help create a boundary and barrier to prevent water loss and disease/pests |
| Palisade Mesophyll | Has chloroplasts for photosythesis and is transpartent to allow light to penetrate |
| Cuticle | Waxy coating on leaf surface, prevents water loss and creates physical barrier to protect the leaf |
| Stoma | Opening (pore) in leaves through with gases pass in and out of the leaf |
| Guard Cells | control the opening and closing of stomata |
| Vein (Vascular Bundle) | Contain vascular tissues (xylem and phloem) to transport water, minerals and sugars |
| Spongy Mesophyll | layer of loosely packed photosynthetic cells with large air pockets between them under lower surface of a leaf on a terrestrial plant. |
| Air Space | Hollow space between spongy mesophyll cells which increase surface area for gas exchange |
| Xylem | Vascular tissue with thick-walled cells that are dead at maturity and transport water and minerals to the leaves |
| Phloem | Vascular tissue that have thin-walled cells, and are living at maturity. Transport sugars produced by photosynthesis in the leaves to other parts of the plant |
| Chloroplasts | Plant cell organelle that contains chlorophyll pigments which captures solar energy to complete photosynthesis. |
| Mesophyll Layer | Photosynthetic middle layer of cells in the leaf of a terrestrial plant. |
| Vascular Cambium | Meristematic cell layer (like stem cells) in the vascular tissue that divide and form new xylem and phloem tissue |
| Pith | Ground tissue in inner regions of the stem and can store starches |
| Cork | Tough, outer layer of the tree that prevents water loss from the stem that cracks |
| Sapwood | younger xylem, conducts the water and minerals. |
| Heartwood | older xylem fills with resins, oils and other chemicals |
| Cortex | Outer layer of a stem or root below epidermis and can store carbs |
| Root Cap | Protect the root meristem |
| Root Hairs | Microscopic extension of the epidermal cells of the root and absorbs water and mineral ions |
| Endodermis | Innermost layer of cells in the cortex of the root and help make sure absorbed water and minerals do not flow back to cortex. |
| Sepal | Protects maturing bud |
| Pedicel | Stalk that supports a single flower |
| Receptacle | Holds the flower |
| Stamen | Male part of a flower |
| Filament | Apart of the stamen and are long and thin stems |
| Anther | Apart of the stamen and is on top of the filament |
| Pistil | Female part of a flower |
| Stigma | Sticky top surface of pistil |
| Style | A shaft found on the pistil |
| Ovary | Holds the ovules |
| Ovules | contains female gamates (egg cells) |
| Pollen Grain | contains male gametes (sperm cells) |
Created by:
evehec
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