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Anatomy Of Flowering Plants – Class 11 Notes For NEET
🔸Plant anatomy is a branch of botany which deals with the study of internal structures and
organization of plants.
🔸Nehemiah Grew is known as the father of plant anatomy.
🔸And K.A. Chaudhary is known as the father of Indian plant anatomy.
🔸A group of cells which is similar or dissimilar in shape, having common origin and
usually performing a common function is called tissue.
🔸Term tissue was coined by Nehemiah Grew.
🔸Tissues are divided into two groups by Carl Nageli on the basis of stage of development–
meristematic and permanent.
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🔸Meristematic tissues is a simple plant tissue in which growth in plants is largely restricted to specialised regions of active cell division.
🔸Meristem is a localised region in which actual cell division occurs.
CHARACTERISTICS OF MERISTEMATIC TISSUES
🔸The Meristematic tissues or meristem is an undifferentiated tissue.
🔸Cell cycle of meristem is in continuous state of division. It means that they have the capacity to divide. So, meristematic tissue is composed of the immature cells.
🔸The Meristematic cells have only primary cell wall which is thin and flexible (elastic) and
made up of cellulose. Secondary cell wall is absent.
🔸Cells of meristem are small and isodiametric and they have dense cytoplasm.
🔸Normally, vacuoles are absent in meristematic cells but if present then small.
🔸They have prominent and large nucleus.
🔸Meristematic cells are metabolically highly active so they lack reserve food.
🔸Plastids are absent in meristems. If they are present, then only in the proplastid stage.
🔸They do not have intercellular spaces. Cells are closely fitted packed together. So, it is a
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