bio test 5/3 Flashcards
cuticle
minimizes H20 loss
epidermis
single layer of protective, non-living cells (contain SOME stomata)
lower epidermis
single layer of protective, non-living cells, (contains MANY stomata)
stomata
air spaces in epidermis that allow gas exchange (co2 and O2 out) - happens mostly in lower epidermis to minimize h20 loss
gaurd cell
“bean” shaped cells that regulate the opening/closing of the stomata
mesophyll
inner tissues of the leaf where photosynthesis occurs ; includes pallisade/spongy layers
- mesoderm in humans
pallisade layer
layer of tightly packer, vertical cells filled with chloroplasts under the upper epidermis - where MOST photosynthesis happens
spongy layer
loosely packed, irregularly shaped cellls in mesophyll ; holds gases in air spaces (CO2 and 02) ; SOME photosynthesis
vein
transport system for h20 and nutrients - contains the Xylem and Phloem
- surrounded by the bundle sheath
Xylem
specialized cells that transport H20 up from the roots
Phloem
specialized cells that transport food throughout the plant
chloroplast
organelle in which photosynthesis occurs
what goes into the light reactions?
what comes out of the light reactions as a FINAL PRODUCT?
oxygen
what comes out of the light reactions that is needed for the calvin cycle?
ATP and NADPH
