Their outer layer, the epidermis, includes cells called guard cells, which surround holes called stomata that allow for gas exchange.
Those that are not sessile contain a structure that in a modified form allows acacia to survive extreme environments; that structure is bracketed by stipules and called the petiole. Other structures in them include a layer of tissue that contains darker, cylindrical cells called the palisade layer. Their outer layer, the epidermis, includes cells called guard cells, which surround holes called stomata that allow for gas exchange. Veins containing xylem and phloem are also found in, FTP, what photosynthetic organs of plants?
Those that are not sessile contain a structure that in a modified form allows acacia to survive extreme environments; that structure is bracketed by stipules and called the petiole.
leaves