ch 29 bio
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Created by:
katieshaughnessy013 on February 8, 2010
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20 terms
Terms | Definitions |
|---|---|
 three types of plant cells | parenchyma, collenchyma, sclerenchyma |
| parenchyma appearance | loosely packed, cube shaped, or elongated |
| parenchyma structure | large central vacuole; thin walls |
| function of parenchyma cells | photosynthesis, storage of water and nutrients, wound healing |
| what do parenchyma cells make? | nonwoody plants, flesh of fruit |
| collenchyma shape | irregular shape |
| appearance of collenchyma | thicker than parenchyma; grouped in strands |
| function of collenchyma | helps in areas that are still lengthening |
| what are made up of collenchyma? | stringy plants (celery, asparagus) |
| sclerenchyma cell wall | thick, even, tightly packed, rigid |
| size of vacuole of sclerenchyma | small |
| function of sclerenchyma | support and strengthen where there is no longer growth; protection |
| what state are sclerenchyma at maturity? | they are dead |
| what do sclerenchyma make up? | shells of nuts |
| types of plant tissue systems | dermal, ground, vascular |
| what does the dermal tissue system make up? | the outside covering of plants |
| what does the dermal tissue system consist of? | the epidermis |
| young plant (dermal) | living parenchyma cells; outermost layer is epidermis; outer layer is made of parenchyma cells; covered by a cuticle to prevent water loss; contains stomata |
| woody plants (dermal) | dead; makes bark and cork |
| function of the dermal tissue system in the leaves, stems, and roots | gas exchange; protection |
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