Which tissue acts as a filter on the water absorbed by root hairs?
A. Endodermis; B. Vascular tissue; C. Endodermis C. Cortex. The epidermis is the outer layer of skin. The correct answer is A.Endodermis. The root of a plant is extremely important in allowing the plant to remain firmly attached to the soil and to obtain water and dissolved minerals.While dicots tend to have a single main root (a tap root), monocots have a fibrous root system with several branching roots. It is during the process of seed germination that the root is generated from the radicle, and the main meristem is responsible for the formation of all the other tissue types in the root.
Water flows through the parenchyma cells until it reaches the endodermis, where it becomes stagnant.
Plants are either monocots or dicots in terms of their vascular tissue, which is found in the core of the root where it forms the stele and is structured slightly differently depending on whether the plant is a monocot or a dicot.
The root
A. Endodermis; B. Vascular tissue; C. Other tissues. C. Cortex. It’s the epidermis, remember? The correct answer is A.Endodermis. The root of a plant is extremely important in allowing the plant to remain firmly attached to the soil and to obtain water and dissolved minerals.While dicots tend to have a single main root (a tap root), monocots have a fibrous root system in which several branching roots are present. The root is created from the radicle during the germination of the seed, and the main meristem is responsible for the formation of all the various tissues of the root.
The procambium produces vascular tissue, the ground meristem produces the cortex, and the protoderm produces the epidermis.Epidermal cells are thin-walled and often form elongated root hairs to help plants absorb more minerals and water from the soil.
The endodermis is composed of cells that are covered with a waxy covering known as the Casparian strip, which guides the passage of water through the cells and into the vascular cylinder of the vascular artery.
The vascular tissue consists of xylem and phloem, which are located at the core of the root where they form the “stele.” There are also several modifications of roots that allow plants to soak in water from the atmosphere, parasitize other plants, or store large amounts of food in their tissues.
Epidermis to endodermis
The epidermal cells of the root have very thin walls, and they frequently grow into extensions known as root hairs as a result of their thin walls. These hairs enhance the amount of surface area available for the absorption and assimilation of water and nutrients from the soil, which is beneficial. The presence of various ions in epidermal cells aids in the establishment of an osmotic gradient, which allows water to enter the cells through osmosis. The dissolved minerals and water that enter the plant through the root hairs are transported through the cortex of the plant’s root system.
This kind of cell is where food is kept after it has been created through photosynthesis in other cells of the plant.
All of these cells contain a layer of mainly suberin and occasionally lignin material in their cell walls, which is referred to as the Casparian strip.
It is hypothesized that the Casparian strip regulates the movement of water through the cells and into the root vascular tissue of the plant.
Vascular tissue
The vascular tissue is made up of xylem and phloem cells, which are responsible for the transportation of water, dissolved nutrients, and carbohydrates. Xylem cells are lengthy tubes that carry water up the plant’s stem, where the molecules may be utilised in photosynthesis. They are found in all plants. Phloem cells are responsible for transporting sugars created during photosynthesis to various parts of the plant’s body. The phloem tissue is likewise made up of elongated cells that are organized in tubes, as is the xylem tissue.
There is also a layer of cells surrounding this tissue that is referred to as the pericycle, and it is this layer of cells that is responsible for the production of lateral roots for the plant.
Secondary tissue is frequently created by the lateral meristem of a fully grown plant in its mature state.
Root adaptations
Many distinct forms of root adaptations are prevalent in the plant world, which have allowed plants to colonize a diverse range of environments and climatic conditions over the course of history. It has been discovered that the taproot (the primary root generated from the radicle) of some plants has been adapted to store food. Turnips, beets, and carrots are all examples of roots that have been genetically engineered to be used as food storage crops. Hosttoria, which are modified roots that can embed themselves into another plant and access its vascular tissue, are found in several parasitic plants.
Pneumatophores are specialized roots that grow in mangroves and serve a variety of functions.
As a result, the pneumatophores, or lateral roots, of the mangrove are engineered to allow the mangrove to absorb more oxygen.
Orchid roots also produce spongy tissue, which aids in the plant’s ability to absorb moisture. Some plants have stems that create adventitious roots as a result of their growth. These give additional support for the plant as it continues to increase in size and strength.
References
- Those in charge of editing the Encyclopedia Britannica (2019). Cortex. Editors of the Encyclopedia Britannica retrieved this information from their database (2019). Root. MJ Farabee obtained this information from Encyclopedia Britannica (2007). Anatomy of a plant. This information was obtained from estrellamountain.edu
- PH Raven, RF Evert, and SE Eichhorn (1987). Plant Biology is the study of the biology of plants. Publishers: Worth Publishers
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- And others (2012). A lignin polymer is used to construct the Casparian strip diffusion barrier in Arabidopsis, which is devoid of suberin. A journal called Proceedings of the National Academy of Sciences
which tissue acts as a filter on the water absorbed by root hairs Water Purifier
The phloem, in contrast to the xylem, is composed of still-living cells that transport sap. The sap is a water-based alternative that is high in sugars, which are produced by photosynthesis. In the plant, sugars are transported to non-photosynthetic components like roots or straight into storage structures like roots or bulbs where they can be stored for a period of time. According to which of the following assertions about the circulation of sap throughout a plant is correct? c) Companion cells are responsible for the development of the conducting cells for sap.
How does phloem transport food?
The food produced in the leaves of a plant is loaded into sieve tubes of phloem tissue with the help of the energy provided by the ATP molecule. Afterwards, water is forced into sieve tubes containing sugar by means of the osmosis process. This results in increased pressure in the phloem tissue. Phloem tissue is responsible for transporting food to all areas of a plant in this manner. Water and minerals are transported from the root cortex into the xylem, which then travels upward via the stem and into the leaves.
b) The xylem sap rises, whereas the phloem sap falls or rises.
Companion cells are responsible for the production of sap-producing tissue.
What is the importance of the Casparian strip?
This strip of thickened wall one cell layer deep enclosing main roots prevents excess soil solution from being drawn straight into the center section of the root where the xylem is situated. The Casparian strip is found within roots and is visibly thickened. Because many plants have phloem tubes that are located outside of the xylem, it is possible to eradicate a tree or other plant by removing the bark from a ring around the trunk or stem of the plant. When the phloem is destroyed, nutrients cannot reach the tree’s or plant’s roots, and the tree or plant will die as a result.
Girdling is the term used to describe this operation, which may also be utilized for agricultural purposes.
Which term describes an area where sugars are used or stored?
The so-called Casparian strip, a visibly thickened wall section one cell layer deep enclosing main roots, prevents excess soil solution from being drawn straight into the center part of the root, where the xylem is situated, allowing the plant to survive. For this reason, many plants have phloem tubes that are located outside of the xylem; hence, by removing the bark from one or more rings on their trunks or stems, they may be destroyed. It is not possible for nutrients to reach the roots if the phloem has been destroyed, and the tree/plant will eventually perish.
Girdling is a method that may be utilized for a variety of agricultural purposes. Girdling is used to generate the huge fruits and vegetables that are commonly seen at fairs and carnivals.
- The pressure-flow hypothesis is the term used to describe the gadget that helps to clarify the movement of sugars throughout a plant. All of these sugars are moved to non-photosynthetic sections of the plant, such as the roots, or directly into storage frameworks, such as bulbous structures or light bulbs. The sap is a water-based service, but it is extremely rich in sugars, which are produced by photosynthesis. The most abundant component of phloem sap is glucose. The phloem, in contrast to the xylem, is composed of still-living cells that transport sap. Buddy cells are responsible for the development of sap-transporting cells.
Is one of the statements about xylem movement in the following list correct? Diffusion is the method through which water and minerals enter the xylem. The xylem cells, which are responsible for transporting water and minerals, are alive.
Water Uptake and Transport in Vascular Plants
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Sperry Annual Review of Plant Physiology and Molecular Biology, Volume 40, Numbers 19-38, 2003.
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Which tissue acts as a filter on the water absorbed by root hairs? – Brainly.com
The Plant Pathology textbook by G. N. Agrios. ‘Academic Press’ is a publishing house based in New York. D. J. Beerling and P. J. Franks are co-authors of this work. Transpiration has a hidden cost in plant science, as demonstrated here. Naturwissenschaften 464:495-496 (2010). A team led by C. R. Brodersen and colleagues Visualizations of embolism healing in the xylem using high-resolution computed tomography in vivo 128, 1088-1095 in Plant Physiology: (2010). Theodore J. Brodribb and Norman McLean Holbrook are two of the most well-known names in the field of forensic science.
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Phloem unloading may be necessary for recharging embolized xylem conduits, according to Plant Science180,604-611 (2011).
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Steudle, E.
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W., and others).
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Tyree and J.
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S.
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Chapter 36 – Mastering Biology – Subjecto.com
| Which tissue acts as a filter on the water absorbedby root hairs? | endodermis Endodermal cells filter solutes fromwater and allow them to pass through to the vascular tissue. |
| True or false? Root pressure can move water a longdistance up the xylem because of the higher water potential of the xylem incomparison to the water potential in the surrounding cells. | False Root pressure can move water a short distanceup the xylem because of the lower water potential of the xylem in comparisonto the water potential in the surrounding cells. |
| Which of the following statements about thedistribution of sap throughout a plant is true? | The mechanism that explains the movement of sugarsthroughout a plant is called the pressure-flow hypothesis. |
| Which term describes an area where sugars are usedor stored? | Sink A sink is an area where sugars are used orstored; typically, these are the roots and fruits of a plant. |
| Which of the following statements about xylemtransport is true? | Water and minerals move through the root cortexinto the xylem and upward through the stem and into leaves. Water andminerals that are taken up in the soil are transported from roots to leavesby the xylem. |
| What characterizes the rates of photosynthesis andtransport in a plant on a dry cloudy day? | Both the photosynthesis and transpiration rates arelow. On a cloudy day with low soil moisture, the photosynthesis rate is lowand stomata are closed, so the transpiration rate is low. |
| True or false? The rate of sugar transport in aplant depends on the rate of photosynthesis, the rate of transpiration, andthe difference in turgor pressure between the source and the sink. | False While the rate of photosynthesis and thedifference in turgor pressure between the source and the sink do influencethe rate of sugar transport in the phloem, the rate of transpiration doesnot; transpiration mainly influences the rate of water transport through thexylem. |
| The channels indicated by the pointer, are _.The figure shows a structure of the root. The arrow indicates the channelbetween the cell from the outer layer of the root and the inner one.plasmodesmatatight junctionsmycorrhizaegap junctionsdesmosomes | plasmodesmata (Water and ions can pass from cell tocell via these channels. Also, recall that plasmodesmata are a type of celljunction.) |
| Which of these are symbiotic associations?root hairsapoplastsCasparian stripsmycorrhizaesymplast | mycorrhizae Mycorrhizae are mutualisticassociations of roots and fungi. |
| To view the animation, amp;offset=next . Then click on the image to start the animation.This is an animation of the movement of water and ions through the root_. | via the apoplastic route The animation illustrateswater and ions moving along a cell wall continuum. |
| In roots the _ forces water and solutes to passthrough the plasma membranes of _ cells before entering the _. | Casparian strip … endodermis … xylem TheCasparian strip is a waterproof barrier that forces water and solutes to passthrough the plasma membranes of endodermis cells. |
| _ provide(s) the major force for the movementof water and solutes from roots to leaves. | transpiration Transpiration, the evaporation ofwater from leaves, exerts a pull that bears the primary responsibility forthe movement of water and solutes from roots to leaves. |
| _ bonds are responsible for the cohesion ofwater molecules. | hydrogen Hydrogen bonds among water molecules areresponsible for the tendency of those molecules to stick together. |
| _ cells are the cells that regulate the openingand closing of stomata, thus playing a role in regulating transpiration. | Guard Guard cells regulate the opening and closingof stomata. |
Water Transport in Plants: Xylem
The environment to which the leaf is exposed promotes transpiration, but it also causes the plant to lose a significant amount of water. Tissue water loss can account for up to 90 percent of the total amount of water taken in by roots. The outer surface of the leaves is protected by a waxy cuticle, which inhibits the loss of water. As a result, the primary means of controlling transpiration is through the opening and shutting of stomata on the leaf surface. To protect stomata, two specialized cells known as guard cells are present.
- It is necessary for stomata to open in order for carbon dioxide and oxygen to permeate into the leaf in order for photosynthesis and respiration to take place.
- As a result, plants must maintain a delicate balance between effective photosynthesis and water loss to survive.
- Xerophytes, or desert plants, as well as epiphytes, which are plants that grow on other plants, have limited access to water.
- Aquatic plants (hydrophytes) have their own set of anatomical and morphological leaf adaptations that are distinct from those of terrestrial plants.
- Trichomes are epidermal cells that are designed to look like hair and release oils and other substances.
- These sorts of plants are also known for having several epidermal layers, which are found in abundance.
Plants: Essential Processes: Water Transport
With the transfer of plants from water to land, it has become necessary to build internal systems that would give water to all of the plant’s sections as the plant grows. Tracheophytes (which include virtually all terrestrial plants, with the exception of mosses and liverworts) have evolved complex vascular systems that transport nutrients and water throughout the plant body through “tubes” of conductive cells, as discussed in Plant Classification, Vasular Tissues. Tracheophytes are vascular plants that have developed complex vascular systems that transport nutrients and water throughout the plant body through “tubes” of conductive cells.
It is made up of dead cells that are arranged end to end to form tunnels through which water and minerals may be transported upward from the roots (where they are taken in) to the rest of the plant.
However, although the xylem and phloem are typically organized in different ways in the root than they are in theshoot, the vascular system runs throughout the entire plant and is continuous.
It should be emphasized that TATC, while endorsed by the majority of experts, is only thought to be at work in extremely tall trees and has not been shown to do so.
In addition, water transport happens at the cellular level, with individual cells absorbing and excreting water, as well as transmitting it to nearby cells.
Water always travels from an area with a greater water potential to an area with a lower water potential when it is present in plants.
Whereas there is a high concentration of dissolved solute, the water potential is low; conversely, where there is a low concentration of dissolved solute.
Because the concentration of dissolved elements in the plant’s cellular cytoplasm is high, the water diffuses quickly (and osmotically) into the root hairs and into the root system.
The apoplast is a secondary route for water, which allows it to go over cell walls and through intercellular gaps to reach the root’s core instead of the main pathway.
Generally speaking, water is carried throughout the plant by the joint efforts of individual cells and the conductive tissues of the vascular system as a whole.
Tissue water is transported upward through the xylem by transpiration before being transported into the leaves by another water potential gradient.
In the leaf, some water is lost by evaporation from the stomata, and the remainder of the fluid flows along a water potential gradient from the xylem into thephloem, where it is dispersed throughout the plant together with the organic nutrients created by photosynthesis.