Question 1:(a)Are xylem vessels living or dead structures? Give a reason for your answer.(b)What is the main function of the xylem vessel? State three structural adaptations of the xylem vessels and their functions.(c) How are the adaptations in the roots of plants similar to the ...
xylem tensionMartin Canny's concepts of "tissue pressure" and its derivative "compensating pressure" are reviewed. Tissue pressure arises when the volume change of some living cells exerts a pressure on adjacent living or dead cells. Contrary to previous assertions, tissue pressure cannot cause a ...
Xylem is a complex tissue that performs the function of transport of water or sap inside the plant. Xylem made up of three types of dead cells (vessels, tracheids, xylem fibres) and xylem parenchyma that is the living component.
Where are the spore-producing structures located on a mushroom? Mushroom Reproduction: Mushroom reproduction can occur in a number of ways. Mushrooms can reproduce both sexually and asexually through the production of spores. Mushrooms may fragment or break off and form new offspring. Additionally, ...
Tracheids are highly specialized non-living cells that are present inthe xylem of plants. These elements help in water conduction and provide mechanical support to the plants. They are not perforated and are found in seedless vascular plants and gymnosperms such as cedar, pine, ferns, mosses, ...
Which plant cells are dead at maturity, although still providing some useful function? a. Dermal b. Ground c. Xylem d. Phloem e. Lateral meristems Ferns and horsetails are ___ plants. a. flowering b. nonvascular c. seedless vascular d. seed-bearing v...
cell walls (Fig.3b). In contrast, the northern population showed the lowest ability to modulate its response in terms of isotopic signatures or xylem parameters (Fig.3a, b). Their cell walls also became thinner under drought (Fig.3b)....
Vascular plants have conducting, also referred to as vascular or liquefied, tissues that transport water, minerals, and photosynthetic materials throughout the plant’s roots, stems, and leaves. They differ from nonvascular plants, which do not have conducting tissues, and require water for ...
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The differentiated xylem of trees consists of dead instead of living cells. However, the long distance movement of silencing signals is generally from source to sink through a bulk flow process that is characteristic of the phloem (reviewed in [3]). Based on this fact and the fact that the...