Subject: Environmental Physiology State the percentage range of the fresh weight of plants that is made up of water, and situate herbaceous and woody plants in this range.
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Subject: Environmental Physiology
State the percentage range of the fresh weight of plants that is made up of water, and situate herbaceous and woody plants in this range.
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- There are four (4) types of water movement in plants. Provide three (3) types of water movement. *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.Which the following statement is FALSE:?a. Relative water content is not a very sensitive index because leaves can show strong responses to <2% change in RWCb. Relative water content is not a very sensitive index because it gives no information about the forces for water movementc. Relative water content is equal the ratio of the mass of water in a given leaf over the mass of water when that leaf was fully saturatedd. Relative water content is equal the ratio of the mass of water in a dry leaf over the mass of water when that leaf was fully saturated
- 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.Identify which type of plant water movement is meant for long distance transport in plant. *Select the correct answer regarding cation exchange and plant mineral nutrition cation exchange is necessary because negatively charged ions are stuck to inorganic particles of soil cations are likely to leech out of the soil if there are drainage problems or flooding hydrogen ions freely diffuse out of plant roots into soil cation exchange works because plants substitute a strongly charged cation (H+) for required minerals waste products from cellular respiration provide an energetically free (no ATP needed) mechanism to exchange cations
- I. Phloem and Xylem. Identify the vessel type based on the characteristics provided. Characteristics Xylem or Phloem Contains living cells Substances transported upward from roots to shoots Transports sugar Cell partitions or end walls are absent Made of dead cells Carries molecules bidirectionally Transports water and minerals Can perform active transport of molecules End walls are perforated Has companion cellsbriefly comment on the usefulness of tissue analysis in the diagnosis in plant nutrient statusDirection: Draw the monocot and dicot root section and trace the symplast and apoplast route for the movement of water from the soil to the xylem. Use red ballpen for the symplast route and blue ballpen for the apoplast route. . Trace the mechanism of carbohydrate digestion. Explain the specific organ/s that is responsible for ingestion, digestion, absorption and elimination.
- a. How do stem being cut underwater affect the speed of absorption of water? b. Why do wilted plants are slow when it comes to absorption of water?Explain why soil water potential is a better measure of water availability for plants than volumetric or gravimetric water content.Direction: Explain the following in paragraph form consists of at least five sentences Stomates must be open for evaporation to occur. Going back to the last lesson, how plant transport and gas exchange happens?