Grade 12 Exam > Grade 12 Videos > Biology for Grade 12 > Plant Cell & Its Organelles
Plant Cell & Its Organelles Video Lecture | Biology for Grade 12
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FAQs on Plant Cell & Its Organelles Video Lecture - Biology for Grade 12
| 1. What are the different organelles present in a plant cell? |  |
Ans. Plant cells have several organelles, including the nucleus, mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, vacuoles, and cell wall. Each organelle performs specific functions necessary for the plant cell's survival and growth.
| 2. What is the function of the mitochondria in a plant cell? | |
Ans. Mitochondria are responsible for producing energy in plant cells through cellular respiration. They convert nutrients into adenosine triphosphate (ATP), which is the main source of energy for various cellular activities.
| 3. How do chloroplasts contribute to the plant cell's functioning? | |
Ans. Chloroplasts are responsible for photosynthesis, the process by which plants convert light energy into chemical energy. They contain chlorophyll, a pigment that captures sunlight and uses it to produce glucose, which is essential for the plant's growth and survival.
| 4. What is the role of the vacuole in a plant cell? | |
Ans. The vacuole in a plant cell serves multiple functions. It stores water, nutrients, and waste products, helps maintain turgor pressure for cell rigidity, and plays a role in detoxification and the breakdown of macromolecules.
| 5. How does the cell wall contribute to the structure of a plant cell? | |
Ans. The cell wall provides structural support and protection to plant cells. It is composed of cellulose, a complex carbohydrate, which gives the cell wall its rigid nature. The cell wall helps maintain the shape of the plant cell and prevents it from bursting under osmotic pressure.
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Dec 23, 2024 Last updated |
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