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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...

MORPHOLOGY OF FLOWERING PLANTS NOTES

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 The wide range in the structure of higher plants is fascinating, particularly the diversity found in angiosperms. Despite the large diversity in external structure or morphology, all angiosperms share certain characteristics: roots, stems, leaves, flowers, and fruits. Standard technical terms and definitions are essential for successful classification and understanding of higher plants and other living organisms. Variations in different plant parts are often adaptations to their environment, such as adaptations to various habitats, protection, climbing, or storage. When pulling out any weed, you will observe that they all have roots, stems, and leaves. Some may also bear flowers and fruits. The underground part of a flowering plant is known as the root system, while the portion above the ground is called the shoot system. 5.1 THE ROOT In dicotyledonous plants, the radicle directly elongates to form the primary root, which grows into the soil. This primary root gives rise to latera...

THE LIVING WORLD NEET IMPORTANT QUESTION QUESTIONS

 1.  An attribute found in plants but not animals is (1) Metabolism (2) Sexual reproduction (3) Autotrophy (4) Asexual reproduction ANS: An attribute found in plants but not animals is Autotrophy. Autotrophic organisms are those that produce their own food through the process of photosynthesis or chemosynthesis. This is a characteristic feature of plants, algae, and some bacteria, which are capable of making their own food using simple inorganic substances like carbon dioxide, water, and sunlight. 2.  Which of the following is less general in characters as compared to genus (1) Species (2) Family (3) Class (4) Division ANS: The taxonomic category that is less general in characters as compared to genus is species. A species is a group of organisms that share similar characteristics and can interbreed to produce fertile offspring. It is a more specific category than the genus, which includes a group of related species. 3.  An attribute found in plants but not...

SEXUAL REPRODUCTION IN FLOWERING PLANTS REVISION NOTES

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 FLOWER – A FASCINATING ORGAN OF ANGIOSPERMS Flowers have been used for aesthetic, ornamental, social, religious, and cultural purposes. Five ornamental flowers commonly cultivated in homes and in gardens are rose, sunflower, tulip, daisy, and lavender. Five flowers used in social and cultural celebrations can vary but examples include marigold, chrysanthemum, lily, lotus, and peony. Floriculture refers to the cultivation of flowers for ornamental and decorative purposes. The two parts in a flower in which the two most important units of sexual reproduction develop are the stamen and pistil. 1.2 PRE-FERTILISATION: STRUCTURES AND EVENTS Several hormonal and structural changes occur in a plant before it starts to flower. These changes lead to the differentiation and development of the floral primordium. Inflorescences are formed which bear the floral buds and then the flowers. The male and female reproductive structures, the androecium and the gynoecium differentiate and develop in t...

NEET UG 2023: A Realistic 2-Month Study Plan

 Preparing for NEET UG in just two months may seem like a daunting task, but it's possible with a well-planned and focused approach. The National Eligibility cum Entrance Test (NEET) is a highly competitive exam that determines admission to top medical colleges in India. With the right strategy and dedication, you can maximize your chances of success in the exam. In this blog, we will provide a comprehensive two-month strategy to crack NEET UG.  understanding of the exam pattern, marking scheme, syllabus, and other important details Exam Pattern: NEET UG is a three-hour long exam with 180 multiple-choice questions. The questions are divided into three sections: Physics, Chemistry, and Biology (Botany and Zoology). Each section contains 45 questions. Marking Scheme: For every correct answer, you will get four marks, and for every incorrect answer, one mark will be deducted. Unanswered questions will not be penalized. Syllabus: The NEET UG syllabus is based on the CBSE syllabus ...