differentiate between collenchyma, scenlenchyma and parenchyma
Answers
Difference Between Parenchyma Collenchyma and Sclerenchyma
Found in
Parenchyma: Parenchyma cells are found in every soft part of the plant like leaves, fruits, bark, flowers, pulp and pith of the stems.
Collenchyma: Collenchyma cells are found in petiole, leaves and young stems, appearing as a continuous ring beneath the epidermis.
Sclerenchyma: Sclerenchyma is found in the mature parts of the plant like herbaceous perennials and woody plants.
Specialized/Unspecialized
Parenchyma: Parenchyma cells are unspecialized cells.
Collenchyma: Collenchyma cells are specialized cells.
Sclerenchyma: Sclerenchyma cells are specialized cells.
Cell Wall Thickness
Parenchyma: Parenchyma consists of a thin cell wall.
Collenchyma: Collenchyma consists of an unequally thin cell wall.
Sclerenchyma: Sclerenchyma consists of a thick and rigid cell wall.
Cell Wall Constituents
Parenchyma: Parenchyma cell wall is made up of cellulose.
Collenchyma: Collenchyma cell wall is made up of cellulose and pectin.
Sclerenchyma: Sclerenchyma cell wall is made up of waterproofing lignin.
Intercellular Space
Parenchyma: Intercellular space is present between parenchyma cells.
Collenchyma: No or little intercellular space is present between collenchyma cells.
Sclerenchyma: No intercellular space is present between sclerenchyma cells.
Shape
Parenchyma: Parenchyma cells are isodiametric in shape.
Collenchyma: Collenchyma cells are polygonal in shape.
Sclerenchyma: Sclerenchyma cells are tubular in shape.
Type
Parenchyma: Parenchyma produces permanent tissues, which can achieve meristematic activity when stimulated.
Collenchyma: Collenchyma produces permanent tissues, which can achieve meristematic activity when stimulated.
Sclerenchyma: Sclerenchyma also produces permanent tissues, eliminating the ability of dividing.
Alive/Dead at Maturity
Parenchyma: Parenchyma consists of living cells at maturity.
Collenchyma: Collenchyma consists of living cells at maturity.
Sclerenchyma: Sclerenchyma consists of dead cells at maturity. Hence, their protoplast is absent.
Function
Parenchyma: Photosynthesis, storage of food, gas exchange and floating of aqueous plants are the major functions of parenchyma.
Collenchyma: Providing mechanical support to the plant, resisting bending and stretching by the wind are the major functions of collenchyma.
Sclerenchyma: Providing mechanical support, protection and transportation of water and nutrients are the major functions of sclerenchyma.
Hope it helps you.
Parenchyma, collenchyama, and sclerenchyma are three types of simple, permanent tissues, collectively called ground tissue in plants. Simple tissues are made up of a single cell type, which forms a homogenous, uniform cell mass in the body of the plant. Parenchyma is the most abundant type of cells in simple tissues. They are isodiametric cells containing thin cell walls. Parenchyma cells are found in all organs of the plant, seeds, fruits, flowers, leaves, stems and roots. Collenchyma cells consist of unevenly thick cell walls. They contain vacuolated protoplasts and are absent in monocots. Sclerenchyma cells are dead cells at their maturity, containing the thickest cell walls. They are specialized cells found in mature parts of the plant body. The main difference between parenchyma collenchyma and sclerenchyma is that parenchyma cells are involved in photosynthesis, storage, and secretion, while collenchyma cells are involved in support and transportation of nutrients and sclerenchyma cells are involved in the support, protection, and transportation of water and nutrients. ☺️☺️☺️☺️☺️☺️ ☺️☺️