Biology Parts Of A Leaf Quiz Flashcards
function of stem
hold up the leaf
function of petiole
what attaches the leaf to the stem
leaf blade
the leaf its self
upper epidermis
a single layer of clear cellsfunction -let light through-protect the leaf
cuticle
waxy layer on the upper epidermisfunction-help prevent water loss
lower epidermis
single layer of clear cellsfunction-let light through-protection
stomata
found in the lower epidermisopenings that let air in and out of the leafthe air that goes in --CO 2the air that goes out--O 2
guard cell
they surround the stomatethey control the opening and closing of the stomate**They contain chloroplast-- therefore carry on photosynthesis
mesophyll
everything in the middlethings you find in the mesophyll-palisade layer-spongy layer
palisade layer
- located under the upper epidermis-contain the MOST CHLOROPLASTS therefore carry on the most photosynthesis
spongy layer
-have chloroplasts therefore they carry on photosynthesis-surrounded with air space-have gas exchange**CO 2 goes into cellsO 2 and water vapor leave cell
vein
conducting tissue/ vascular tissue (bundle) 2 parts=xylem and phloem
xylem
-in the vein ON TOP-hallow dead cells(straws)-go from roots to leaves-purpose- bring water and minerals up by capillary action
phloem
- in the vein ON BOTTOM(Sap)-living cells-carries foodfood that is made in the leaves in the summer is brought down to the rest of the plant and roots, while in the winter the food is brought up from the roots in the spring
Photosynthesis Formula MUST MEMORIZE THIS
______________________ 6 CO 2 +12 H 2 O------------ C 6 H 12 O 6 + 6 O 2 +6 H 2 O