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Mind Map: Nutrition in Animals | Science Class 7 (Old NCERT) PDF Download
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FAQs on Mind Map: Nutrition in Animals - Science Class 7 (Old NCERT)
| 1. What are the main types of nutrition in animals? |  |
Ans. The main types of nutrition in animals are autotrophic and heterotrophic nutrition. Autotrophic nutrition involves organisms that produce their own food, like plants through photosynthesis. In contrast, heterotrophic nutrition refers to animals that cannot make their own food and must obtain it by consuming other organisms. This includes herbivores, carnivores, and omnivores, which have different dietary habits based on their food sources.
| 2. How do herbivores obtain and digest their food? | |
Ans. Herbivores are animals that primarily eat plants. They have specialized teeth, such as flat molars, that help grind tough plant material. Their digestive systems are adapted to break down cellulose, a major component of plant cell walls. Many herbivores have a longer digestive tract and may also possess a rumen or similar structures that allow fermentation of plant material by microorganisms, aiding in digestion.
| 3. What role do carnivores play in the ecosystem? | |
Ans. Carnivores are animals that primarily eat other animals. They play a crucial role in maintaining the balance of ecosystems by controlling the population of herbivores and other species. This predation helps to ensure that no single species dominates the environment, promoting biodiversity. Additionally, by consuming weak or sick individuals, carnivores contribute to the health of prey populations.
| 4. What is the importance of a balanced diet for animals? | |
Ans. A balanced diet is essential for animals as it provides the necessary nutrients required for growth, repair, and overall health. This includes proteins for muscle development, carbohydrates for energy, fats for insulation and energy storage, vitamins for various metabolic processes, and minerals for bone formation and other physiological functions. A lack of any of these nutrients can lead to health issues and impair the animal's ability to survive and reproduce.
| 5. How do omnivores differ from herbivores and carnivores in terms of nutrition? | |
Ans. Omnivores are animals that eat both plants and animals, which gives them a more flexible diet compared to herbivores and carnivores. This adaptability allows omnivores to thrive in various environments and utilize a wider range of food sources. Their digestive systems possess features that enable them to process both plant and animal materials, allowing them to benefit from the nutrients found in both types of food.
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