Transport in plants

• What happens to water in the plant during transpiration?

  The evaporation of water from the leaves causes a shortage of water in the plant, allowing more water to be taken up from the roots.
• Through which part of the plant does water move during the transpiration stream?

  Water moves through the xylem as part of the transpiration stream.
• What is the pathway of water in the transpiration stream?

  The pathway of water is through the root hair cells, root cortex cells, and then to the xylem which transports water to the mesophyll cells in the leaves.
• What is the transpiration pull?

  The transpiration pull moves water up and drags other water molecules up too due to cohesion.
• What is cohesion in the context of transpiration?

  Cohesion refers to water molecules sticking to each other.
• How can you investigate the movement of water in plants?

  You can place a plant stem in water dyed with a stain to observe the colored water traveling up the xylem.
• How does temperature affect transpiration?

  As temperature increases, the rate of transpiration also increases because water particles gain more energy to diffuse and evaporate.
• How does humidity affect transpiration?

  When the air is more humid, the concentration gradient is reduced, lowering the rate of diffusion and thus reducing the transpiration rate.
• How does air movement influence transpiration?

  As the movement of air increases, the concentration gradient is increased, leading to an increase in the rate of transpiration.
• What effect does light intensity have on transpiration?

  As light intensity decreases, the stomata close, reducing photosynthesis and consequently decreasing the rate of transpiration.
• What are the functions of transpiration in plants?

  Transpiration helps to transport water and minerals from the roots to the leaves, regulate the plant’s temperature, and maintain turgor pressure in the cells.
• How does transpiration work in plants?

  Transpiration starts at the roots, where water is absorbed and transported to the leaves through the xylem, and evaporates from the stomata.
• What is the importance of transpiration in the water cycle?

  Transpiration helps to redistribute water from the Earth’s surface back into the atmosphere, where it can form clouds and eventually return as precipitation.
• How does transpiration relate to photosynthesis?

  Transpiration and photosynthesis are closely related because both processes occur in the leaves, with transpiration helping to cool the leaves and maintain conditions for photosynthesis.
• Can transpiration be measured in plants?

  Yes, transpiration can be measured using a potometer, which measures the rate of water uptake in a plant.
• What is the role of stomata in transpiration?

  Stomata are the primary sites where water vapor is released from the plant, regulating the rate of transpiration.
• What are the factors that affect transpiration in plants?

  • Humidity
  • Temperature
  • Light
  • Wind
  • Opening and closing of stomata
• What is the process of transpiration in plants?

  1. Water is absorbed by the roots.
  2. Water travels through the xylem to the leaves.
  3. Water evaporates from the stomata.
  4. Evaporation creates a pull that draws more water up.
• How does transpiration occur in plants?

  Water diffuses through the plant from the roots and evaporates from the leaves through the stomata.