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10. Simple Permanent Tissues
Simple Permanent TissuesThese tissues are simple. They are made up of only one type of cell. ... Simple permanent tissues are again classified into three main types. They are parenchyma, collenchyma, and sclerenchyma. Parenchyma – The cells of this tissue are living, with thin cell walls.
The complex permanent tissues are also called as conducting tissues of vascular tissues because they are participating in the movement of different chemical compounds within the plant body. There are two type of complex permanent tissues.
11. Xylem is composed of 4 elements: tracheids, vessels, xylem parenchyma and xylem fibres.
12.Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.
13., plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
14.It forms a boundary between the plant and the external environment. The epidermis serves several functions: it protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.
15.In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.
16.The primary function of the plant cuticle is as a water permeability barrier that prevents evaporation of water from the epidermal surface, and also prevents external water and solutes from entering the tissues.
17. In botany, a stoma, also called a stomate is a pore, found in the epidermis of leaves, stems, and other organs, that facilitates gas exchange. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening.
18. Differentiation is a process of finding a function that outputs the rate of change of one variable with respect to another variable. Informally, we may suppose that we're tracking the position of a car on a two-lane road with no passing lanes.
19.Cambium, plural Cambiums, orCambia, in plants, layer of actively dividing cells between xylem (wood) and phloem (bast) tissues that is responsible for the secondary growth of stems and roots (secondary growth occurs after the first season and results in increase in thickness).
20. Cork cambium (pl. cambia or cambiums) is a tissue found in many vascular plants as a part of the epidermis. ... The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems.
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