plant organisation

• transpiration is the process of water evaporating from a plant
• the rate of transpiration depends on factors such as temperature, light intensity, humidity, wind speed, leaf area index (LAI), stomatal density, and the presence of waxy cuticles.
• xylem is a transport tissue in a plant which transports water and dissolved minerals from the root to the leaves
• xylem are adapted so they lose their end walls so the xylem forms a continuous, hollow tube
• palisade mesophyll is a tissue found in a plant leaves that is specialised to carry out photosynthesis
• in the palisade mesophyll the palisade cells contain a lot of chloroplasts to help them perform this photosynthesis. The palisade cells are closely packed together to maximize light absorption.
• translocation is the movement of food molecules through the phloem tissue
• spongy mesophyll is a tissue found in plant leaves that is specialised for gas exchange
• The spongy mesophyll cells are covered by a thin layer of water. Gases dissolve in this water as they move into and out of the cells
• Phloem is the vascular plant tissue responsible for the transport and distribution of sugars produced by the photosynthesis.
• The cells that make up phloem have been adapted to their function: sieve tubes, which are specialized for transport