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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...
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DBT BET 2020 SOLVED PAPER

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 PART A Which of the following is true for acetyl-CoA? 1. it is an acetyl group attached to a type of coenzyme 2. it is another name for oxaloacetate 3. it is a protein 4. it is an acetyl group joined with a form of cobalt Ans: Acetyl-CoA is a molecule composed of an acetyl group attached to coenzyme A. Coenzyme A is a molecule that is involved in many metabolic pathways and acts as a carrier of acetyl groups. 2. The role of DNA ligase in DNA replication is 1. addition of new nucleotides to the leading strand 2. addition of new nucleotides to the lagging strand 3. formation of a phosphodiester bond between the 3’-OH of one Okazaki fragment and the 5’-phosphate of the next on the lagging strand 4. base pairing of the template and the newly formed DNA strand Ans: DNA ligase is an enzyme that plays a crucial role in DNA replication by joining the Okazaki fragments on the lagging strand. Okazaki fragments are short segments of newly synthesized DNA that are generated during DNA replica...
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