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It hampers the capillary action, water transportation of water and minerals in plants.

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Penny Janson

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3y ago

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The casparian strip prevents water and minerals from entering the stele through?

The casparian strip is a waterproof barrier in the endodermis of plant roots that blocks the passive flow of water and minerals between cells. This ensures selective uptake of essential nutrients and prevents harmful substances from entering the stele.


The waterproof strip that surrounds cells of the endormis is the?

I think the answer is b which is vascular cylinder


What is the chemical nature of the casparian strip how does it affect the movement ot water in the root?

The casparian strip contain suberin.


The endodermis a is the outer covering of the root b is part of the vascular tissue c contains the Casparian strip which regulates the movement of substances d is none of the above?

the answer is (c) contains the Casparian strip, which regulates the movement of substances


What is the role of casparian stripe?

To understand the purpose of the Casparian strip we must first understand what it is. The Casparian strip is found in the root of the plant. It is a barrier made of suberin, a waxy material that is impervious to water and dissolved minerals that is located in the transverse and radial walls of the endodermal cells - the final barrier between the outside and its various harmful materials and the vascular tissue. Another thing we need to understand is the transport routes of water and its dissolved nutrients and minerals from root to vascular tissue. There are three routes - the symplastic route - a route that goes through the cytosol of cells (which is continuous thanks to cytoplasmic channels called plasmodesmata) exclusively. The cytosol of the cells is collectively referred to as the symplast. the apoplastic route - a route that goes through the cell walls of cells (which are also continous) exclusively. The celle walls, extracellular spaces and dead interiors of tracheids and vessels are known collectively as the apoplast. the transmembrane route - like the name suggests, a route that goes through both the symplast and the apoplast. But recall that the Casparian strip is IMPERVIOUS to water! It forces water on apoplastic and transmembrane routes to cross the membrane of the endodermal cell to enter the vascular tissue via symplast. Why is this important? Recall again that the endodermal cells are the last gateway to the vascular tissue. When water is forced to detour into the cell because of the Casparian strip, it must cross the selectively permeable plasma membrane. While the Casparian strip doesn't serve as a gateway, it has a vital purpose. It is kind of like a security guard in front of a metal detector at the airport - it ensures that everything going onto the plane (into the vascular tissue) is thoroughly checked.


What might happen to a plant whose endodermal cells lacked a Casparian strip?

The plant's roots may have reduced ability to control the uptake of water and nutrients, leading to inefficiencies in nutrient absorption. This could result in stunted growth, nutrient deficiency, and vulnerability to stress factors like drought or excess salt in the soil.


What is the physical barrier in the root that regulates the flow of water to xylem via cell walls?

The Casparian strip is the physical barrier in the root that regulates the flow of water to xylem via cell walls. It is a band of impermeable suberin found in the endodermis of plant roots creating a selective barrier.


What would happen in a root that had no casparian strip?

A root without a casparian strip would be unable to regulate the flow of water and nutrients from the soil into the vascular system of the plant. This can lead to uncontrolled uptake of substances, disrupting the plant's ability to maintain proper hydration levels and nutrient balance. Ultimately, it can lead to toxicity or deficiencies in the plant.


There is a one-way movement of water and minerals from the cortex into the vascular cylinder of a root because?

of the endodermis, a layer of cells that control the movement of substances into the vasculature. The endodermis contains the Casparian strip, which is impermeable to water and minerals and forces them to pass through the selective membrane proteins of the endodermal cells into the vascular tissue.


Why is the Casparian strip advantageous in terms of selective mineral uptake?

The Casparian strip is advantageous for selective mineral uptake because it forces water and minerals to pass through the plasma membrane of endodermal cells, where they can be selectively absorbed. This helps regulate the types and amounts of minerals that enter the plant, preventing toxic buildup and ensuring efficient nutrient uptake.


What layer makes the Casparian strip waterproof?

The Casparian strip is made waterproof primarily by the suberin, a waxy substance found in the cell walls of the endodermis in plant roots. This layer acts as a barrier to water and solutes, forcing them to pass through the cell membrane rather than around the cells, thus regulating the uptake of minerals and water into the plant.


Why are monocot roots generally slender in appearance?

Monocot roots are generally slender due to the presence of a prominent endodermis that lacks the Casparian strip. This allows for easier nutrient and water absorption through the entire surface of the root compared to roots with a Casparian strip that restricts movement. Additionally, monocot roots typically have a fibrous root system with numerous thin roots that contribute to their slender appearance.