Biology plants
Terms
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- stomata
- a pore that allows Carbon dioxide for photosynthesis to diffuse in and oxygen to diffuse out
- an example of a xerophyte adaptation
- saguaro, Cereus giganteus
- symplast
- continuum of living cytoplasm, which are connected from one cell to the next by plasmodesmata, some dissolved minerals move from the epidermis via it
- Coniferophytes
- Conifers, Gymnosperms, Gymnospermophytes
- Bryophyte
- mosses, Liverworts
- xylem
- brings water to replace loss due to transpiration
- Angiospermophytes
- Flowering plants
- cuticle
- waxy covering to prevent water loss, thicker on top of leaves
- epidermis
- continuous layer of cells that prevents water loss, usually 1 cell layer thick, cells lack chloroplasts
- guard cell
- pair of cells that can open and close the stoma and control transpiration
- function of the endodermis
- regulates the movement of nutrient minerals that enter the xylem in the roots interior
- Saguaro
- Cereus giganteus
- casparian strip
- a special bandlike region on endodermal cells
- palisade mesophyll
- consists of densely packed cylindrical cells with many chloroplasts, only in dicots
- apoplast and symplast
- the 2 pathways that the water and dissolved nutrient minerals that enter the root cortex from the epidermis move in solution along
- bundle sheath
- layer of tightly packed cells that surround the xylem and phloem, only in dicots
- endodermis
- internal layer of the cortex
- root
- provides a large surface area for mineral ion uptake
- Filicinophyte
- Ferns
- transpiration
- loss of water vapor from the leaves and stems of plants
- example of a hydrophyte adaptation
- Amazon water lily, Victoria amazonica
- Parts of a dicotyledonous plant
- Terminal bud, lateral roots, taproot, node, flower, axillary bud
- function of casparian strip
- blocks the passage of water and nutrient minerals along the cell walls between adjoining endodermal cells
- Amazon water lily
- Victoria amazonica
- xerophyte
- plants that are adapted to grow in very dry habitats
- spongy mesophyll
- consists of loosely packed rounded cells with few chloroplasts.
- phloem
- transports products of photosynthesis out of the leaf
- apoplast
- used most frequently, consists of interconnected porous cell walls of a plant along which water flows freely
- The water potential in root cells is
- negative
- hydrophyte
- plants that are adapted to grow either submerged in water or floating on the surface
- leaf
- produces food by photosynthesis