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Plant Growth & Development in One Shot (NCERT) Video Lecture - Biology Class 11 - NEET

268 videos|544 docs|326 tests

FAQs on Plant Growth & Development in One Shot (NCERT) Video Lecture - Biology Class 11 - NEET

1. What is plant growth and development?
Ans. Plant growth refers to an increase in size or mass of a plant, while plant development involves changes in the plant's form and structure over time. Growth and development are important processes that occur throughout the life cycle of a plant.
2. What are the factors that influence plant growth and development?
Ans. Several factors influence plant growth and development, including environmental factors such as light, temperature, water, and nutrients. Hormones, genetic factors, and interactions with other organisms also play a significant role in shaping plant growth and development.
3. How does light affect plant growth and development?
Ans. Light is essential for photosynthesis, a process through which plants convert light energy into chemical energy. It also influences various aspects of plant growth and development, including seed germination, stem elongation, leaf expansion, and flowering. Different wavelengths of light, such as red and blue light, have specific effects on these processes.
4. What are the stages of plant growth and development?
Ans. The stages of plant growth and development typically include seed germination, vegetative growth, reproductive growth, and senescence. During seed germination, the seedling emerges from the seed and begins to develop roots and shoots. Vegetative growth involves the growth of leaves, stems, and roots, whereas reproductive growth includes flower formation and fruit production. Senescence refers to the aging and decline of plant tissues.
5. How do hormones regulate plant growth and development?
Ans. Hormones are chemical messengers that regulate various processes in plants, including growth and development. Plant hormones, such as auxins, gibberellins, cytokinins, abscisic acid, and ethylene, interact with each other to control cell division, elongation, differentiation, and other developmental processes. These hormones play crucial roles in tropisms, flowering, fruit ripening, and responses to environmental stimuli.
268 videos|544 docs|326 tests
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