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Which of the following tissues has dead cells with thick and lignified cell walls, having a few or numerous pits?
- a)Sclerenchyma
- b)Collenchyma
- c)Xylem
- d)Phloem
Correct answer is option 'A'. Can you explain this answer?
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Which of the following tissues has dead cells with thickand lignified ...
Sclerenchyma is asimple supportive tissue of highly thick-walled cells with little or no protoplasm. Sclerenchyma cells are generally dead, thesecells are empty. Wall thickeninig is uniformwhich can bemade up of cellulose,lignin or both pits are usually simple and oblique, they may be branched.
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Which of the following tissues has dead cells with thickand lignified ...
Sclerenchyma Tissue:
Sclerenchyma tissue is a type of plant tissue that provides mechanical support to the plant. It is composed of dead cells that have thick and lignified cell walls. These cells have a few or numerous pits.
Characteristics of Sclerenchyma Tissue:
1. Dead cells: Sclerenchyma cells are dead at maturity.
2. Thick and lignified cell walls: The cell walls of sclerenchyma cells are thick and lignified. Lignin is a complex organic polymer that provides strength and rigidity to the cell wall.
3. Pits: Sclerenchyma cells have pits that allow for the exchange of water and other substances between cells.
Types of Sclerenchyma Tissue:
There are two types of sclerenchyma tissue:
1. Fibers: Fibers are elongated cells that are found in bundles. They provide strength and support to the plant.
2. Sclereids: Sclereids are short, irregularly shaped cells that are found throughout the plant. They provide mechanical support and protection to the plant.
Function of Sclerenchyma Tissue:
The main function of sclerenchyma tissue is to provide mechanical support and protection to the plant. It also helps in the transport of water and other substances between cells.
Sclerenchyma tissue is a type of plant tissue that provides mechanical support to the plant. It is composed of dead cells that have thick and lignified cell walls. These cells have a few or numerous pits.
Characteristics of Sclerenchyma Tissue:
1. Dead cells: Sclerenchyma cells are dead at maturity.
2. Thick and lignified cell walls: The cell walls of sclerenchyma cells are thick and lignified. Lignin is a complex organic polymer that provides strength and rigidity to the cell wall.
3. Pits: Sclerenchyma cells have pits that allow for the exchange of water and other substances between cells.
Types of Sclerenchyma Tissue:
There are two types of sclerenchyma tissue:
1. Fibers: Fibers are elongated cells that are found in bundles. They provide strength and support to the plant.
2. Sclereids: Sclereids are short, irregularly shaped cells that are found throughout the plant. They provide mechanical support and protection to the plant.
Function of Sclerenchyma Tissue:
The main function of sclerenchyma tissue is to provide mechanical support and protection to the plant. It also helps in the transport of water and other substances between cells.
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Which of the following tissues has dead cells with thickand lignified cell walls, having a few or numerous pits?a)Sclerenchymab)Collenchymac)Xylemd)PhloemCorrect answer is option 'A'. Can you explain this answer?
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