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ANATOMY OF FLOWERING PLANTS

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  What is Plant Anatomy? Plant anatomy is the study of internal structure and organization of tissues in plants. It helps in understanding: Functional adaptation Transport system Growth patterns Tissue Organization in Flowering Plants Flowering plants have three major tissue systems :  Epidermal Tissue System Components: Epidermis Single layer of compact cells No intercellular spaces Covered by cuticle (except roots) Cuticle Made of cutin Prevents water loss Stomata Present mainly on leaves Composed of guard cells Regulate: Gas exchange Transpiration Root hairs Extensions of epidermal cells Increase surface area for absorption Trichomes (in stem) Hair-like structures Protection + reduce transpiration  Functions: Protection Water conservation Gas exchange 🌿 B. Ground Tissue System  Types of Ground Tissue: 1. Parenchyma Living cells, thin cell wall Large vacuole Functions: Storage Photosynthesis ( chlorenchyma ) Air storage ( aerenchyma ) 2. Collenchyma Living cell...

THE FUNDAMENTAL UNIT OF LIFE: exemplar question

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Multiple Choice Questions 1. Which of the following can be made into crystal? (a) A Bacterium (b) An Amoeba (c) A Virus (d) A Sperm ANS: (c) A Virus can be made into a crystal. Viruses are microscopic infectious agents that consist of genetic material (DNA or RNA) enclosed in a protein coat called a capsid. Under certain conditions, viruses can be crystallized, which involves arranging the viral particles in an ordered, repeating pattern. 2. A cell will swell up if (a) The concentration of water molecules in the cell is higher than the the concentration of water molecules in the surrounding medium (b) The concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell (c) The concentration of water molecules is same in the cell and in the surrounding medium (d) Concentration of water molecules does not matter ANS:  (b) The concentration of water molecules in the surrounding medium is higher than the water molecule concentration in...