photosynthesis plant definitions Flashcards
stoma
pores on underside of leaf
vein
contains tissues which transport foor + water
spongy mesophyll
layers of cells with air spaces between
waxy cuticle
transparent layer on top of leaf
lower/upper epidermis
single layer of flat cells covering top/bottom surface of leaf
palisade cells
layer of long cylindrical cells under upper epidermis
guard cells
control opening + closing of stomatal pores
chloroplasts
small structures containing chlorophyll in which photosynthesis occurs
nucleus
containt genetic material (DNA) of organism, controls cells activities
cytoplasm
liquid of mainly water that makes up most of cell, chemical reactions occur here
cell membrane
flexible outer layer surrounding cell, controls substances that pass in and out
mitochondria
most respiration occurs here, energy from glucose from food is released
cell wall
tough outer layer containing cellulose for strength and support
vacuole
space in cytoplasm keeping cell firm, has watery liquid called cell sap
