Leaf structure Flashcards
What is the waxy cuticle in a leaf structure?
The waxy cuticle is a waterproof layer on the surface of the leaf that reduces water loss by evaporation and protects against pathogens.
What is the spongy mesophyll layer in a leaf?
The spongy mesophyll is a layer of loosely packed, irregularly shaped cells in the leaf, located beneath the palisade mesophyll. It contains air spaces that facilitate gas exchange (CO₂ and O₂) and has some chloroplasts for photosynthesis. This structure helps in efficient diffusion of gases throughout the leaf.
What is the palisade mesophyll layer in a leaf?
The palisade mesophyll is a layer of tightly packed, column-shaped cells located beneath the upper epidermis of the leaf. It contains many chloroplasts, making it the primary site of photosynthesis. This layer is responsible for capturing light energy efficiently to produce food for the plant.
