Transport in Plants

Cards (12)

What are the plant tissues?
Epidermis, Palisade mesophyll, Spongy mesophyll, Xylem vessels, Phloem vessels, Meristem tissue
What is the function of the epidermis?
It covers the outer surfaces of the plant for protection
What is the function of the palisade mesophyll?
The main site of photosynthesis in a leaf
What is the function of the spongy mesophyll?
It is air spaces between the cells to allow gases to diffuse through the leaf
What is the function of the xylem vessels?
It transports water and minerals through the plant from roots to leaves.
Supports the plant
What is the function of the phloem vessels?
Transports dissolved food materials through the plant
What is the function of the meristem tissue?
It is found mainly at the tips of the roots and shoots, where it produces new cells for growth
In leaves, most water will evaporate and diffuse out of the stomata
The loss of water in leaves is called transpiration
Factors affecting the rate of transpiration:
Increase in temperature will increase rate, more energy is transferred to the water to allow it to evaporate
Faster air flow increases the rate, blows away water vapour allowing more to evaporate
Increased light intensity will increase rate, will cause stomata to open
Increase in humidity will decrease rate, the air contains more water vapour, concentration gradient for diffusion is lower
In a leaf, the role of the guard cells is to open/close the stomata
Movement of food through phloem tissue is called translocation