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Mesophytic Leaf - Coggle Diagram
Mesophytic Leaf
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Adapted to
ABSORB light
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thin transparent
cuticle
covers epidermis - reduce water
loss by evaporation, does not
prevent light entering
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Definitions
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- Epidermis
- layer cells covering top +
bottom of leaf
- made closely fitting cells
- no chloroplasts
- transparent = allow light through
- cell walls physical barrier = physical defence
Waxy Cuticle
waxy substance lies on top of
upper epidermis
- waterproof = reduce water loss
- physical defence
- transparent = allow light through
Stomata
- small holes surrounded by guard cells
- found mostly lower epidermis
- allow gas diffuse into + out of leaf
Guard Cells
- sausage-shaped cells
surrounding stomata
- open and close stomata
- chloroplasts in them
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Xylem Vessels
thick walled tubes found
inside veins
- carry water + inorganic ions
Phloem sieve-tubes
smaller walled tubes found in veins
- translocate sugars produced
by photosynthesis