The Folding Mystery of Chromosomes The chromosomes of eukaryotic organisms are a complex structural organization of DNA and proteins. The exact structural organization of proteins and DNA to form the chromatin material (or chromosomes during cell division) is a curious question in the scientific community. This curiosity becomes a wonder […]
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Sclerenchyma: Structure, Classification and Functions
Sclerenchyma is a simple permanent tissue in plants. Sclerenchymatous cells are dead at their maturity. Cells do not have protoplast when they completely developed. They have thick secondary cell wall. The secondary cell wall is lignified and very hard. Most of the sclerenchymatous cells show intrusive growth. The present post […]
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Collenchyma: Structure, Classification and Functions
Collenchyma is a simple permanent tissue in plants. They are living cells with prominent nucleus and all the cell organelles. Each collenchymatous cell is with a large and prominent vacuole in the centre. The vacuole is filled with many secondary metabolites. Unlike parenchyma, the collenchyma cells possess thick primary cell […]
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Epithelial Tissue: Classification and Examples
What is Epithelium? Ø Epithelium is a tissue system in animals. Ø Epithelium constitutes the outer layer of body surfaces, linings of the alimentary canal and the walls of hollow structures. Ø It covers the internal or external surfaces of the body. Ø Epithelial cells are held together by carbohydrate […]
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Biological Importance of Water
Biological Importance of Water Biological importance of water: Water is the mother liquid of all forms of life. The essentiality of water for living systems is quite evident as without water, there is no life. No other substance on earth is abundant as water. All aspects of cell structure and […]
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