Class 9 Exam > Class 9 Videos > Nutrition in Animals (Part - 3) - Science, Class 9
Nutrition in Animals (Part - 3) - Science, Class 9 Video Lecture
FAQs on Nutrition in Animals (Part - 3) - Science, Class 9 Video Lecture
| 1. What is nutrition in animals? |  |
Ans. Nutrition in animals refers to the process by which animals obtain and utilize food for their growth, development, and maintenance of their bodily functions. It involves the intake, digestion, absorption, and assimilation of nutrients from the food consumed.
| 2. How do animals obtain their nutrition? | |
Ans. Animals obtain their nutrition by consuming food. Different animals have different feeding habits and adaptations. Herbivores primarily eat plants, carnivores eat other animals, and omnivores consume both plants and animals. Some animals are filter feeders, while others are scavengers or detritivores.
| 3. What is the process of digestion in animals? | |
Ans. The process of digestion in animals involves the breakdown of complex food substances into simpler forms that can be absorbed and utilized by the body. It typically includes mechanical digestion (chewing, grinding) and chemical digestion (enzymes breaking down food molecules). The digested food is then absorbed through the walls of the digestive tract and transported to cells for utilization.
| 4. How are nutrients absorbed in the digestive system of animals? | |
Ans. Nutrients are absorbed in the digestive system of animals through the walls of the small intestine. The inner lining of the small intestine has numerous finger-like projections called villi, which increase the surface area for absorption. The villi are covered with microvilli, further enhancing absorption. Nutrients pass through the cells of the villi and enter the bloodstream or lymphatic system for transportation to different parts of the body.
| 5. What are the different types of teeth in animals and their functions? | |
Ans. Animals have different types of teeth adapted for various functions. Incisors are sharp and used for cutting and biting, canines are pointed and used for tearing flesh, premolars and molars have flat surfaces for grinding and crushing food. Herbivores have specialized teeth for chewing and grinding plant material, while carnivores have sharp teeth for capturing and tearing prey. Omnivores have a combination of teeth for both plant and animal food.
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Dec 26, 2024 Last updated |
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