Q: How are roots able to concentrate some nutrients and exclude others?
A: To describe: How roots are able to concentrate some nutrients and exclude others
Q: At what stage of growth would a leaf be a sugar sink? What would be its sugar source?
A: Plants are the autotrophs and primary producers in the food chain. Plants leaves contain Chlorophyll…
Q: The mature regions of roots are relatively impermeable to water. Why? Explain its importanc
A: The direct radicle elongation gives rise to the root. It is usually an underground plant part, meant…
Q: why is pressure higher in parts of the phloem Where sugar is being loaded than in parts were sugars…
A: Movement of water and minerals through the xylem is driven by negative pressure and movement through…
Q: Why and how does water enter continuously into the root xylem of plants?
A: The biological process by which green plants and certain other autotrophic organisms use sunlight to…
Q: How is primary growth different from secondary growth?
A: With respect to the plant physiology:
Q: How do we trace the fate of the minor soil nutrients from soil formation to their uptake and release…
A: There are seventeen elements or nutrients are essential for plant growth and reproduction. They are…
Q: What is meant by suction force of the plant cell? Does the suction force facilitate or make…
A: Transpiration is the loss of water from the stomata of plant leaves. Transpiration of water from…
Q: How does the direction of transport differ in xylem and phloem?
A: Plants have specialized tissues that perform different functions. Xylem and phloem plant tissues are…
Q: Why can xylem transport water and minerals using deadcells, whereas phloem requires living cells?
A: Xylem and phloem are vascular tissues of the plants. Xylem is composed of four parts: Tracheids,…
Q: Is there any other environmental signal that roots could use to achieve downward growth?
A: In vascular plants, the roots are the organs of the plant that are modified to provide the anchorage…
Q: What is loss of water from injured parts of a plant?
A: Loss of water from plants can occur due to various reasons naturally like in transpiration water is…
Q: Due to availability of less water, how does the plant cope up with lack of water in desert…
A: The plants which grow in desert conditions are adapted by modified leaves and stems to survive the…
Q: What is the main functions of secondary growth in roots?
A: Plant growth originates in meristems, which are regions of a plant where the cells divide…
Q: Transpiration occurs because of which of the following? absorption of water and dissolved minerals…
A: Transpiration occurs because of the evaporation of water at the stomatal surfaces. Transpiration…
Q: What are the effects of pH on plant growth rates?
A: The concentration of main nutrients in a soil, as well as the composition of microelements available…
Q: What is the time required for water to reach the uppermost leaf on a fresh stem cut in air?
A: Xylem is involved in the long distance transport of water and dissolved mineral nutrients from roots…
Q: Discuss the structure of roots with secondary growth.
A: There ae two types of growth that occurs in plants namely, primary and secondary: Primary growth:…
Q: Why roots bend towards the source of water?
A: The plants have the ability to react to and to produce adjustments to a increased variety of changes…
Q: When does the effect of root pressure in transport of water is more important?
A: It is the pressure occurring in the small plants. It forces the water movement from high pressure as…
Q: Water absorption from the soil with the help of root hairs involves which types of forces?
A: As a result of the transpiration pulled by aerial plant parts, a negative pressure is exerted down…
Q: If an animal died near a root, would the plant have greater access to ammonium, nitrate, or both?
A: Many plants absorb most of their nitrogen requirement in the form of nitrates. Nitrogen is present…
Q: Explain the mechanisms ensuring the conveyance of the water from the soil and its transport to the…
A: Introduction Plants need continuous supply of water and nutrients for their survival and growth.…
Q: If a plant can improve its ability to obtain water by growing more roots, why shouldn’t the plant…
A: Root is a major part of vascular plants which grows underground. It is essential for absorption of…
Q: What could increase the rate of water uptake (transpiration) by a plant?
A: Transpiration is the cycle of water development through a plant and its dissipation from flying…
Q: What are differences between the transport of materials in xylem and phloem?
A: Xylem and phloem plays a major role in transportation of important nutrients in the plants and are…
Q: Why should tree root be maintained with a bulk of original soil when transplanted?
A: To avoid transplant shock during transplant of tree , original bulk of soil to be maintained…
Q: What role does root pressure play in water movement in plants?
A: The root is the part of a plant that attaches it to the ground or to a support, typically…
Q: In what conditions apoplastic transfer of phloem unloading will be necessary and why? *
A: Photoassimilates ( Mostly carbohydrates)are produced in source tissues and loaded into the phloem…
Q: how roots are protected as they grow through soil?
A: Plants are multicellular and eukaryotic organisms. Plant body is made of shoot and root. Shoots are…
Q: How do salty soils affect the matric potential and, in turn, affect root pressure and overall water…
A: Given: Explain how do salty soils affect the matric potential and, in turn, affect root pressure and…
Q: Contrast primary growth in roots and shoots
A: The growth of the plant that occurs due to the cell division of primary meristem present on the tip…
Q: By which thing the difference in concentration of ions between roots and soil is eliminated?
A: Minerals are absorbed from the soil in form of ions.
Q: Why do plants make such an extensive investment belowground?
A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…
Q: What allows the phloem to move material according to plant's need?
A: Phloem is the living tissue in the plants. It transports the soluble organic compounds including…
Q: How does nutrient uptake by roots influence the soil pH near the root? What happens to the soil pH…
A: The level of acidity of the soil is measured as soil pH. It is one of the contributory components in…
Q: Why is the ability of water molecules to form hydrogen bondsimportant for the movement of xylem sap?
A: Introduction Plants need continuous supply of water and nutrients for their survival and growth.…
Q: Why is phloem transport considered an active process?
A: Plants are mainly multicellular plants that have ability to perform photosynthesis and belong to…
Q: How does desirable climate affect plant growth and where they can grow?
A: The types of plants that can flourish in a given location are influenced by its climate. Plant…
Q: What is the time required for water to reach the uppermost leaf on a wilted stem with no cut?
A: Wilting is a plant adaptation that allows it to conserve water during the hottest parts of the day.…
Q: What is the role of bryophytes in soil formation?
A: Bryophytes - these are flowerless green plants and are of small size, these are non - vascular…
Q: Why does a layer of periderm offer only temporary protection? When the plant makes a new layer of…
A: In plant cells, cell types known as meristems are capable of differentiating into all cell types.…
Q: Can plants thrive in a soil-less environment? When will it be most useful to grow plants without…
A: Introduction: Growth is one of the fundamental characteristics of all living things. Even in Plants,…
Q: Why is it easier to culture meristem compared to permanent tissue?
A: The meristem tissues that have the capability to enlarge and consist of young immature cells. The…
Q: What are symptoms of plant water relations?
A: Water is vital for life and important for the survival of all plants. Water is also necessary for…
Q: What is the mechanism behind vascular water transport and why does it happen in dead xylem cells?
A: The vascular system in plants consists of two vascular tissues which are responsible for the…
Q: Explain the process by which dry soil leads to closing of the stomata.
A: Transpiration is an important phenomenon in the plant world. Water is transported from the roots to…
What creates the difference in concentration of ions between roots and soil?
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- By which thing the difference in concentration of ions between roots and soil is eliminated?What is the difference between total pore space and pore size? Which soil property controls both of them?During an experiment, a student covers all the stomata of a plant with nail polish, sealing them shut a)Predict how this would affect water transport b)How would this affect transport in the phloem?
- How large are the forces that allow leaves to pull water from the soil?What is meant by suction force of the plant cell? Does the suction force facilitate or make difficult the entrance of water into the cell?In the transport of an ion from the soil solution to the xylem, what is the minimum number of times it must cross a cell membrane? What transport mechanisms are likely to be involved at each membrane?
- Which element is responsible for causing soil salinity?At what concentration does the soil become saline?What are the four components of the total water potential in a soil and what sign does each component have? What components of the total water potential most influence water flow in soil under unsaturated and saturated conditions?What is loss of water from injured parts of a plant?
- Water absorption from the soil with the help of root hairs involves which types of forces?How does nutrient uptake by roots influence the soil pH near the root? What happens to the soil pH when a plant takes up ammonium vs. nitrate?What would likely happen to an herbaceous plant if the soil water content is below optimal range and there is increased ambient temperature?