Introduction Of Growth And Development Lecture In Urdu Hindi | Class 12 Biology

Hi Everyone! Welcome To My Channel "Ali Academy Biology Lectures" About This Video ........................ In This Video Lecture You Will Learn Basic Concept Of Introduction growth And Development GROWTH AND DEVELOPMENT IN PLANTS stem and root and they are of the following types. its adult form constitute embryonic development. Growth is the permanent and are young tissues or group of cells that retain the potential to divide. In lower plants, development proceeds, all sorts of the changes take place. The most obvious change the entire plant body is capable of growing, but in higher plants, the entire plant body In plants growth and development involve cell division, elongation and diferentiation of cells into tissues and then organs. Growth is an irreversible increase in size and but the rate of growth is not uniform throughout the plant body. At the beginning, the these growing points are called meristems. These meristematic cells are located at the A plant has a growth pattern called open growth. Throughout life, the plant adds new down. In vascular plants, growth occurs through the activity of meristems. Meristems organs such as branches, leaves and roots, enlarging from the tips of roots and shoot (i) Apical Meristems (i) Apical Meristems The apical meristems are found at the tips of roots and shoot and are primarily concerned with the extension of plant body. These are perpetual growth zones found at the apices of roots and stems. They are responsible for increase in the number of cells at the tips of roots and stem, so they play important role in primary growth (ii) Intercalary Meristems tissues. They are situated at the bases of internodes in many plants. They play important Role These are the parts of apical meristem which get separated from apex by permanent role in the production of leaves and lowers. These are of temporary nature. (iii) Lateral Meristems gymnosperms. Vascular and cork cambium are the examples of lateral meristem. They play an important role in the increase in diameter of stem and root and in secondary and fruits; while others are indeterminate i.e. they- grow by meristems that continually growth are determinate i.e. they grow to certain size and then stop e.g. leaves, lowers Lateral meristems are cylinders of dividing cells. They are present in dicots and replenish themselves, remaining youthful e.g. vegetative root and stem. About This Channel..................... I make these videos cause I love to draw and connect the complexity of science and medicine into art. I'm not saying. I'm 100% correct in all my videos, but I do try to obtain the information from credible sources. One-stop destination for all biology lectures. _ students in class 11, 12 or appearing for competitive medical exams ( NMDCAT ) will find it very beneficial _ The videos are categories under various heading to make the students life simplified Visit My Other Channel Playlist ..................... NMDCAT PART 1: /playlist/PLSXzOBvA_c1Mwe5KZtn9NXyHWPHvPTPG2 NMDCAT PART 2: /playlist/PLSXzOBvA_c1MkXL0rEFZgTYI8rkpxYiZh Class 11th Lectures: /playlist/PLSXzOBvA_c1Mwe5KZtn9NXyHWPHvPTPG2 Class 12th Lectures: /playlist/PLSXzOBvA_c1MkXL0rEFZgTYI8rkpxYiZh Class 10th Lectures: /playlist/PLSXzOBvA_c1PzItWzs9PNc3R-ALvCCBd1 Subscribe My Channel: /c/ALIACADEMYA7R Social Link........................ Instagram: https://instagram.com/ranaalibiologist?utm_medium=copy_link

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