Plant leaves Flashcards
Site for photosynthesis
Leaves
The first indicator that a new leaf is on its way to maturity
Leaf primordia
Leaf buttress, elongates until a flattened blade appears attached to petiole
Bulge
Leaves with no petiole and attached directly to the stem
Sessile leaves
Where photosynthesis takes place
Mesophyll
A picket one cell layer thick Mesophyll
Palisade mesophyll
Collection of photosynthetic cells that are loosely arranged to allow good diffusion of gasses
Spongy mesophyll
Important for the survival of plants
Leaf shapes and sizes
Thicker leaves if ____
water is limited
Smaller leaf blades for areas with ____
String winds to minimize wind drag
arrangement of leaves
Phyllotaxy
The response of plants to touch
Thighmotropism
Water lilies and water spinach have extra cells in between the mesophyll to allow buoyancy
Floating leaves
Extra layers of leaves underneath the flowers
Bracts
