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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.
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What is a lignin in the plants?
lignin hardened vascular tissues to transport water and nutrients
What are basic structural differences between bryophytes and vascular plants?
Bryophytes are land plants that are non-vascular plants. Most do not have special structures for the transport of water. If they do contain specialized structure for tranportation of water, they do not contain lignin, so they are not considered true vascular plants. They are mosses, hornworts, and liverworts. Vascular plants contain lignified tissues (xylem) for transporting water and spcialized non-lignified tissue (phloem) to conduct products of photosynthesis. They iclude clubmosses, horsetails, ferns, and gymnosperms (including conifers), and angiosperms (flowering plants).
What is main structural components of the wall of a plant?
Plant material is the main structural component of plants.
Is cellulose an important structural molecule in plants?
Yes.
What is the main component of the cell wall of plants?
Cellulose, Hemicellulose and Lignin
Which of these is an example of structural protein in plants?
Lignin
What is structural protein in plants?
Cellulose is the structural protein in plants.
What are lignified cells?
Lignified cells are cells that contain lignin, which is used for structural support in plants.
Cellulose is the main component of what?
Glucose .
What are the example of stuctural polyssacharides?
Structural polysaccharides are the polysaccharides that are found to form the structure of an organism. Eg. Cellulose - in plants Chitin - found in outer skeleton of insects and crabs Lignin - wood
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 structural polysaccaride found in plant cells?
cell wall Cell walls are found in plants and not in animal cells; however, fungi also have cell walls and they are not plants or animals.
What is protein used for in plants?
proteins in plants are mainly enzymes and structural molecules. Cellulose is not a protein, but chloroplasts contain proteins. Hope this helps!
What is the source of lignin in soil?
The source of lignin in the soil is dead plants.
What is a lignin in the plants?
lignin hardened vascular tissues to transport water and nutrients
How do plants make protein?
Enzymes are proteins, as too are many structural parts of plants, and even organelles within cells are composed of protein. Nuts and seeds always contain large amounts of protein, as they need to support the plant in its first few days of 'life'.
What gives plants their hard feel?
Cellulose and in trees lignin.
