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Class 12, Bio-Botany - Key points, Lesson-6 Principles of Ecology / சூழ்நிலையியல் கோட்பாடுகள்

 Lesson-6 Principles of Ecology CLICK HERE TO ATTEND BOOKBACK ONEWORD ONLINE TEST / புத்தக வினா தேர்வு எழுத இங்கே சொடுக்கவும்.   1. Ecological Hierarchy Individual Organism: This is the basic building block in ecology. Population: A group of Individual Organisms of the species that share a specific area. Community: Various Populations that live together and interact within an area. Ecosystem: The relationship between biological Communities and the physical environment, which includes abiotic factors. Landscape: A patchwork of interacting Ecosystems that spread across a large spatial scale. Biome: Large regional ecological units that are defined by major vegetation types and climate zones. Biosphere: The whole life ‑ supporting global zone that surrounds our planet.   2. Autecology vs. Synecology Autecology (Species Ecology): The study of an Individual Organism or species in relation to its environment. Synecology (Community Ecology): The eco...
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Class 12, Bio-Botany - Key points, Lesson-5 Plant Tissue Culture / தாவரத் திசு வளர்ப்பு

Lesson 5 - Plant Tissue Culture CLICK HERE TO ATTEND BOOKBACK ONEWORD ONLINE TEST / புத்தக வினா தேர்வு எழுத இங்கே சொடுக்கவும்.      Plant Tissue Culture is a laboratory method that helps to grow plants, from single plant cells, tissues or small parts. The process takes place in an environment and uses a nutrient-rich culture medium that provides all the necessary nutrients.   Key Concepts Totipotency: The natural power inside a living plant cell that lets it turn into a whole working plant. Explant: Any piece of a plant like a tip of a bud, a slice of leaf a piece of stem or a root tip that is placed on the growth soup to start new life. Dedifferentiation: When grown old cells turn back into young, dividing cells and form a mass called callus. Redifferentiation / Differentiation: The way unchosen callus cells become special. They change in chemistry and shape to build tissues new plant parts or new embryos.          CLICK HERE TO ATTEN...
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Class 12, Bio-Botany - Key points, Lesson-4 Principles and Processes of Biotechnology / உயிரிதொழில்நுட்பவியல் நெறிமுறைகளும் செயல்முறைகளும்

Key points for Lesson - 4. Principles and Processes of Biotechnology CLICK HERE TO ATTEND BOOKBACK ONEWORD ONLINE TEST / புத்தக வினா தேர்வு எழுத இங்கே சொடுக்கவும். 1. Molecular Tools & Modifying Enzymes: a.   Restriction Enzymes (Molecular Scissors): Restriction Enzymes cut bonds at specific nucleotide targets and are classified as nucleases.   b.     Exonuclease: Exonuclease removes nucleotides from the ends of DNA strands.   c.     Endonuclease: Endonuclease removes nucleotides from inside the DNA strand.   d.   DNA Ligase (Molecular Glue): DNA Ligase joins DNA fragments by forming phosphodiester bonds.   e.    Alkaline Phosphatase: Alkaline Phosphatase. Removes terminal 5' phosphate groups to stop linearized plasmid vectors from self ‑ ligating.   f.   DNA Backbone:   5' -- [Phosphate]--[Sugar]--[Base]... [Base]--[Sugar]-- [Phosphate]  3' CLICK HERE TO ATTEN...
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Class 12, Bio-Botany - Key points, Lesson-3 Chromosomal Basis of Inheritance / குரோமோசோம் அடிப்படையிலான பாரம்பரியம்

 Class 12, Bio-Botany - Key points, Lesson-3 Chromosomal Basis of Inheritance /  குரோமோசோம் அடிப்படையிலான பாரம்பரியம் CLICK HERE TO ATTEND BOOKBACK ONEWORD ONLINE TEST / புத்தக வினா தேர்வு எழுத இங்கே சொடுக்கவும்.  Chromosomal Basis of Inheritance Allohexaploidy: An allopolyploid formed from species. An allohexaploid contains six sets of chromosomes. It has two copies of each of three genomes for example AABBDD in bread wheat.    Aneuploidy Types: changes in chromosomes relative to the diploid (2n) state: Monosomy (2n - 1): Loss of one chromosome.    Double Monosomy (2n - 1 - 1): Loss of two chromosomes.    Trisomy (2n + 1): Addition of one extra chromosome.    Tetrasomy (2n + 2): Addition of a pair of chromosomes.   Calculation Example: If the haploid number n = 18 then the diploid number 2n = 36. Double monosomy (2n - 1 - 1) Gives 34 and trisomy (2n + 1) Gives 37.    CLICK HERE TO ATTEND BOOKB...
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Class 12, Bio-Botany - Quiz, Lesson-10 Economically Useful Plants and Entrepreneurial Botany / பொருளாதாரப் பயனுள்ள தாவரங்களும் தொழில் முனைவுத் தாவரவியலும்

QUIZ - 12th BIO-BOTANY (ECONOMICALLY USEFUL PLANTS AND ENTREPRENEURIAL BOTANY) YOU CAN - BIO-BOTANY BOOK BACK ONEWORD MOCK TEST TIME LEFT: 00:00 10. Economically Useful Plants and Entrepreneurial Botany / பொருளாதாரப் பயனுள்ள தாவரங்களும் தொழில் முனைவுத் தாவரவியலும் 13 Questions | 13 Minutes | Marks: 13 Student Name / மாணவர் பெயர் * Teacher Name / ஆசிரியர் பெயர் * Participant Email ID / மின்னஞ்சல் முகவரி * English Medium தமிழ் வழி 1 / 13 SCORE: 0 / 13 Switch Language / மொழி மாற்று Next Question ...
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