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Unicellular and Multicellular Video Lecture - Class 8
FAQs on Unicellular and Multicellular Video Lecture - Class 8
| 1. What is the difference between unicellular and multicellular organisms? |  |
Ans. Unicellular organisms are made up of a single cell, while multicellular organisms are composed of multiple cells. Unicellular organisms can carry out all life processes, such as reproduction and metabolism, within a single cell. On the other hand, multicellular organisms have specialized cells that work together to perform specific functions.
| 2. Can you provide examples of unicellular and multicellular organisms? | |
Ans. Examples of unicellular organisms include bacteria, yeast, and amoebas. These organisms consist of only one cell that carries out all necessary functions for survival. Multicellular organisms include plants, animals, and humans. These organisms are made up of multiple cells that are specialized to perform specific functions, such as photosynthesis in plants or digestion in animals.
| 3. How do unicellular and multicellular organisms reproduce? | |
Ans. Unicellular organisms reproduce through a process called binary fission, where the parent cell divides into two identical daughter cells. Multicellular organisms, on the other hand, have various modes of reproduction depending on their species. Plants can reproduce through seeds, spores, or vegetative propagation, while animals reproduce through sexual or asexual reproduction.
| 4. What are the advantages of being multicellular? | |
Ans. Multicellular organisms have several advantages over unicellular organisms. Being composed of multiple cells allows for division of labor, where different cells can specialize in specific functions, increasing overall efficiency. This specialization also enables multicellular organisms to adapt to different environments and perform more complex tasks. Additionally, multicellularity provides a higher level of structural support, allowing for larger and more complex body structures.
| 5. How do unicellular and multicellular organisms obtain nutrients? | |
Ans. Unicellular organisms obtain nutrients through processes such as diffusion and active transport across their cell membrane. They can absorb nutrients directly from their environment. Multicellular organisms, on the other hand, have specialized structures and systems for nutrient acquisition. Plants have roots to absorb water and minerals from the soil, while animals have digestive systems to break down and absorb nutrients from their food.
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Nov 21, 2024 Last updated |
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