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What is 'lignin'?
Lignin is a complex polysaccharide (therefore a carbohydrate). http://en.wikipedia.org/wiki/Image:Lignin_structure.svg There are no amino acids, nitrogenous bases, or fatty acids-- therefore lignin must be a carbohydrate and have sexy glycosidic linkages. Wikipedia says it so it must be true. ~Period 1 AP Bio (Fowler)
Is Lignin an example of structural protein in plants?
Lignin is not a protein but it the "cement" that binds cellulose together to give plants and trees its structural strength. Lignin offers rigidity (so trees have more lignin than plants) whereas cellulose offers load bearing capability (like iron rods in reinforced concrete). The equivalent of lignin in animals is collagen, which is a protein. An interesting fact linking these two structural support molecules, lignin in plants, and collagen in animals, is that both the biomolecules require oxygen for their synthesis. So nature could have only created multicellular organisms with structure after oxygen became abundant on earth. The abundance of oxygen itself was triggered by single cell bacteria that "excreted" oxygen when they made food from sunlight. So nature "bootstrapped" larger living creatures using the excretion of single cell life.
What is the substance that makes a plant woody?
The substance which makes plants woody is lignin. The wood part of plants ( bark in trees ) is made entirely of xylem which is the transport vessel that carries water from the roots to the leaves. Since wood is made of lignified xylem which is very hard, it makes it woody and hard.
What are the two tissues that are thickened by lignin?
The two types of tissues that are thickened by lignin are xylem and sclerenchyma. Xylem is responsible for water transport and provides structural support in plants, while sclerenchyma consists of supportive tissues that have thickened cell walls, often found in stems and seeds. The presence of lignin in these tissues enhances their rigidity and durability.
What is the main component of the cell wall of plants?
Cellulose, Hemicellulose and Lignin
Why is it surprising to find lignin in aquatic plants?
Lignin is a biopolymer that gives support to vascular plants, and is thought to have evolved after aquatic plants took on land. many aquatic plants produce lignin or lignin-like polyphenols however. There is still debate on distinguishing terrestrial from aquatic plant lignin.
What is the source of lignin in soil?
The source of lignin in the soil is dead plants.
Which of these is an example of structural protein in plants?
Lignin
What gives plants their hard feel?
Cellulose and in trees lignin.
What is lignin where is it present?
Lignin is a complex organic polymer found in the cell walls of plants, providing structural support and rigidity. It is primarily present in the woody tissues of plants, such as trees and shrubs, as well as in other vascular plants like grasses.
What is 'lignin'?
Lignin is a complex polysaccharide (therefore a carbohydrate). http://en.wikipedia.org/wiki/Image:Lignin_structure.svg There are no amino acids, nitrogenous bases, or fatty acids-- therefore lignin must be a carbohydrate and have sexy glycosidic linkages. Wikipedia says it so it must be true. ~Period 1 AP Bio (Fowler)
Is lignin a sugar alcohol?
No, lignin is not a sugar alcohol. Lignin is a complex organic polymer found in the cell walls of plants, providing structural support and rigidity. Sugar alcohols, on the other hand, are a type of carbohydrate that are commonly used as sweeteners in foods and beverages.
Which carbohydrates found in cell wall of plants?
Main carbohydrate is cellulose.Otherthan it,hemicellulose,pectine,lignin can be seen.
Difference between vascular and nonvascular plants?
Nonvascular plants lack lignin-impregnated conducting cells. They also lack an extensive transport system.
Is Lignin an example of structural protein in plants?
Lignin is not a protein but it the "cement" that binds cellulose together to give plants and trees its structural strength. Lignin offers rigidity (so trees have more lignin than plants) whereas cellulose offers load bearing capability (like iron rods in reinforced concrete). The equivalent of lignin in animals is collagen, which is a protein. An interesting fact linking these two structural support molecules, lignin in plants, and collagen in animals, is that both the biomolecules require oxygen for their synthesis. So nature could have only created multicellular organisms with structure after oxygen became abundant on earth. The abundance of oxygen itself was triggered by single cell bacteria that "excreted" oxygen when they made food from sunlight. So nature "bootstrapped" larger living creatures using the excretion of single cell life.
What are the only organisms that can be decomposed by fungi?
Fungi can decompose a wide range of organisms, including plants, animals, and insects. However, fungi have specialized enzymes that allow them to break down complex organic molecules like cellulose and lignin, making them particularly effective at decomposing plant material.
What is the substance that makes a plant woody?
The substance which makes plants woody is lignin. The wood part of plants ( bark in trees ) is made entirely of xylem which is the transport vessel that carries water from the roots to the leaves. Since wood is made of lignified xylem which is very hard, it makes it woody and hard.
