(1) Among the three pathways of water movements in plants, which is the most used? Explain the reasons behind. Figure 1: Water droplets on leaf blades (IPM, University of Missouri) Explain the phenomenon shown in Figure I by providing the specific term, elucidating the reason, conditions and plant structure involved. (ii)
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- Describe how the water potential of a leaf changes throughout the course of a 24-hour period. What is driving this change? How does the water potential of this leaf compare to the water potential of a root in the same plant during the same period? How does it compare to the soil underneath the plant? Please fast and properly explain.PLANT PHYSIOLOGY Water Transport in Plants 2. Describe how water is transported from the base of the stem to the leaves.What role does root pressure play in water movement in plants?
- Plant roots have devised in such a manner that they can control over the ions that enter into the water conducting tissue system. Write the location and chemical composition of specific region of plant roots, which make it possible and briefly discuss its importance.Plant Physiology How can a plant survive in flooded areas?Water potential is a driving force in plants’ ability to transport water. Explain what water potential is, and describe a specific example of its role in water movement throughout a plant.
- Can you answer this question with both parts a. How does plant growth respond to gravity in stems vs. roots? b. How is gravitropism controlled during root growth?Name the pressure which is responsible for the movement of water molecules across the cortical cells of root.The xylem cell has a water potential of -45 MPa and the mesophyll cell of the leaf has a water potential of -57MPa. Which way does the water move?
- In xylem, the pressure potential is a negative number. Why? What does the weight of the water have to do with this? Stolons, rhizomes, and horizontal vines do not have a problem with the weight of water. Why? In the epiphytic cactus Rhipsalis, the weight of water actually makes conduction easier. Why?Describe the pathway water would take from the leaf out into the atmosphere. Describe the water's movement through any cells, tissues, and/or systems of the plant body.State ONE difference between the two pathways of water and mineral uptake in plants root.