Structures and related functions of a plant leaf: Leaf structures for gaseous exchange Flashcards
In a leaf structure, the thin epidermis layer allows for quick and easy …
diffusion
In the leaf structure, where does most oxygen enter through?
the stomata
Which two gases leave through the stomata?
carbon dioxide (CO2) and water vapour (H2O)
What do we call the mechanism whereby the stomata opens and closes by guard cells to help regulate gaseous exchange?
regulatory mechanism
What does the leaf have in order to reduce gaseous exchange?
thick cuticle
The increased diffusion of gases is due to the … of the leaf.
large surface area
The transport system in a leaf can be described as being the ‘vascular system’. Which two plant tissues does this consist of?
xylem and phloem
The moist exchange surface consists of cells in the spongy…
parenchyma of mesophyll
In the moist exchange surface, what do intercellular spaces help with?
gas movement
What do we call the area where cells are closely packed on the dorsal surface?
palisade parenchyma
When cells are closely packed on the dorsal surface, what is prevented?
loss of gases
