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Answers
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1. Tissues are groups of cells that have a similar structure and act together to perform a specific function. The word tissue comes from a form of an old French verb meaning “to weave”. There are four different types of tissues in animals: connective, muscle, nervous, and epithelial.
2. In plant anatomy, tissues are categorized broadly into three tissue systems: the epidermis, the ground tissue, and the vascular tissue.
- Epidermis - Cells forming the outer surface of the leaves and of the young plant body.
- Vascular tissue - The primary components of vascular tissue are the xylem and phloem.
3. The meristem is a type of tissue that occurs in plants. It consists of undifferentiated cells capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants. Differentiated plant cells generally cannot divide or produce cells of a different type.
4. Meristems are classified by their location in the plant as apical (located at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases, especially of certain monocotyledons—e.g., grasses).
5. Meristem
The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth).
6. Arising from lateral meristems, secondary growth increases the girth of the plant root or stem, rather than its length. ... Because this growth usually ruptures the epidermis of the stem or roots, plants with secondary growth usually also develop a cork cambium.
7. Plant tissue that has completed its growth and differentiation and is usually incapable of meristematic activity.
8. 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. ... Based on the specific functions, parenchyma can be further classified into Aerenchyma and Chlorenchyma.
9. Answers
1. Parenchyma is a type of simple permanent tissue that makes a major part of ground tissues in plants, where other tissues like vascular tissues are embedded. They are non-vascular and composed of simple, living and undifferentiated cells, which are modified to perform various functions.
2. Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support, particularly in growing shoots and leaves. ... Collenchyma cells are usually living, and have only a thick primary cell wall made up of cellulose and pectin.
3. Sclerenchyma, in plants, support tissue composed of any of various kinds of hard woody cells. Mature sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin. ... Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin.
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Answer:
tissues are the group of cell and perform a special task 2. the tissue present in plant and do functions in side the plant is called plant tissues 3. meristamatic tissues are divided into three parts 1. apical meristamatic they are present at growing tips of plants 2. intercalary meristam they are present at stem to increase width 3. lateral these are present at root fo plant 5. apical meristamatic 6. intercalary meristimatic 7. permanent tissues are the tissue which could not divide the are those meristamatic tissues which stops dividing and growing 8. these are classify into three parts 1 simple permanent 2. complex tissues 9. parenchyma these cells are made up of cellulose have living cell and with tin cell wall ,2. collenchyma these cells are made up of pectin and have hard and thick cell wall 3. scaleranchyma these cell are made up of lignin these cell wall are thick
Explanation: