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What molecules diffuse out of a leaf?
Oxygen and water vapor are molecules that diffuse out of a leaf through tiny pores called stomata. Oxygen is produced during photosynthesis, while water vapor is a byproduct of transpiration, the process where plants lose water through their leaves.
How does the molecular structure of water and the concept of hydrogen bonding relate to transpiration pull?
Water is a polar molecule, meaning that the H atoms are slightly negative and the O atom is slightly positive. Due to the polarity of the H2O molecule, it is possible for the water in the xylem to form a long continuous chain (the water molecules are essentially attracted to one another). Therefore, when water diffuses out of the xylem at the top of the stem, it 'pulls' the chain of water up the xylem.
What is the Opposite of transpiration?
The opposite of transpiration is absorption, where plants take in water and nutrients from the soil.
The name that tells the number of molecules?
Avogadro's number is a term used to represent the number of molecules in one mole of a substance, which is approximately 6.022 x 10^23.
Does precipation come before or after transpiration?
Precipitation typically occurs before transpiration in the water cycle. Precipitation supplies water to plants, which is then utilized in the process of transpiration where plants release water vapor into the atmosphere.
What helps move water up in plants?
Cohesion force among water molecules and transpiration pull.
The ATP utilized in transpiration is derived from the respiration of?
The ATP utilized in transpiration is derived from the respiration of organic molecules. This is what is commonly known as aerobic respiration.
Does a leaf sweat?
By transpiration. Water molecules pass out of the leaf by diffusion following the concentration gradient from higher concentration to lower concentration. The rate of transpiration varies. Factors that affect the rate of transpiration includes wind speed, light intensity, temperature and humidity
What do water molecules look like during evaporation?
Liquid water molecules are transformed in a gas.
What does 5H2O represent?
Five water molecules.
What is used to represent atoms and molecules?
dinosaurs
Where does all of the molecules enter and leave during Plant respiration?
There are pores on the underside of the leaf called stomata they allow transpiration.
What is the process through which water is lost through the plant's stoma?
Evaporation. Water molecules have a cohesive property, so as water molecules closest to the stoma evaporate and diffuse through the stoma they will pull the water molecules from the xylem behind them. These water molecules will evaporate too and draw more water up.
Does transpiration require the plant to use any energy?
Yes, transpiration does not require the plant to use direct energy. The process is primarily driven by passive forces such as the evaporation of water from the plant's stomata and the cohesion of water molecules in the xylem.
What are the differences between osmosis and transpiration?
The movement of water molecules from its region of higher concentration to lower concentration of its region is called osmosis. Transpiration is the loss of water in the form of water vapour from the aerial parts of a plant.
What are 2 ways to pull water upward in a plant?
1.By cohesion force among water molecules. 2.By transpiration pull
How wind affects the rate of transpiration?
Think of a puddle of water evaporating on the ground. Will that puddle evaporate more quickly with wind or without wind? The water molecules will only evaporate when they gain enough kinetic energy to break free and become vapor. Wind facilitates this by giving the molecules that extra push of energy. The same applies to plants and transpiration. Wind will increase the rate of transpiration and water-loss through the leaves of a plant. However, initial water-loss triggers the closing action of the stomata (openings by which water evaporates) and transpiration rate will slow.
