PHOSYNTHESIS :

1- CUTICLE
water proof prvent exessive water loss. transparenr ro allow light to penetarate leaf.

2 UPPER EPIDERMINS
single layer. thin. transparent. allows LIGHT to PENETRATE leaf and REACH the light trapping chloroplast inside. WATCH FOR THE LIGHT TRAP!!!
Epidermal cells doesnt contain chloroplasts therefore sunlight can penetrate easily. remember, CAN pernetrate EASILY because epidermal cells DOESNT contain chloroplasts.

3 VASCULAR BUNDLE.
xylem transports mineral ions and water 2 d leaf.
phloem carries away products of photosynthesis from the leaf.

4 PALISADE MESOPYHLL
cylindrical, packed tighly in an upright positiion under upper epiidermis.  MAKES IT RECEIVE MAX SUNLIGHT.
have HIGH density of CHLOROPLAST, most active cell in photosynthesis. are able to move themselves.

5 SPONGY MESOPYHLL
doesnt have a fixed shape
for increasing the internal surface area for gaseous exchange
looosely aranged between them are air spaces

6 lower epidermis :
doesnt conain choloroplast but got guard cells <enable the opening and closing of stomata