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Which characteristic best describes parenchyma?
Cells arranged in a single layer with guarding function.
Living cells with thin walls, capable of division in young tissues.
Rigid cells that withstand bending.
Dead at maturity with thick secondary walls.
Living cells with thin walls, capable of division in young tissues.
Parenchyma is a type of simple permanent tissue consisting of living cells with thin, flexible cell walls composed of cellulose. These cells are metabolically active and are the only plant cells capable of cell division, playing a crucial role in photosynthesis, storage, and tissue repair.
Parenchyma is a type of simple permanent tissue consisting of living cells with thin, flexible cell walls composed of cellulose. These cells are metabolically active and are the only plant cells capable of cell division, playing a crucial role in photosynthesis, storage, and tissue repair.
Think of parenchyma as the 'all-rounder' employees in a factory; they handle the bulk of daily operations, storage, and maintenance, and they are the only ones who can train new recruits through division.
P for Parenchyma, P for Primary wall (thin) and Photo-synthesis/Potential to divide.
╬ФP=0 тАФ Parenchyma cells generally lack secondary wall thickening, keeping turgor pressure regulation as the primary structural support mechanism.
The principle relies on the presence of a distinct nucleus and dense cytoplasm in parenchyma cells, allowing them to remain metabolically active. Because their cell walls are thin and primary, they maintain protoplasmic connectivity via plasmodesmata, facilitating the transport of nutrients and hormones throughout the plant body.
Parenchyma is the most abundant and primitive tissue in plants.
These cells are generally isodiametric in shape.
They serve as the packing tissue between specialized tissues.
Versatility in function (storage, secretion, photosynthesis).
Ability to dedifferentiate for wound healing.
Provides poor structural support compared to sclerenchyma or collenchyma.
Chlorenchyma (parenchyma with chloroplasts) performs photosynthesis.
Aerenchyma (parenchyma with large air spaces) provides buoyancy in aquatic plants.
Option A describes Epidermis, which forms the protective covering.
Option C describes Collenchyma, which provides mechanical support with corner thickening.
Option D describes Sclerenchyma, characterized by lignified, dead cells at maturity.
B is correct тАФ Parenchyma cells are characterized by thin, cellulose-rich cell walls and the capacity for mitotic division in young tissues.
In competitive exams, always link 'Parenchyma' with 'living' and 'Thin', 'Collenchyma' with 'living' and 'Uneven thickness', and 'Sclerenchyma' with 'dead' and 'Lignin'.
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