Saved Bookmarks
| 1. |
1.DEFINE NUTRITION ? 2.WHAT ARE THE TYPES OF NUTRITION ? |
|
Answer» Materials like food that we eat to gain energy is called nutrition. Two types of nutrition areAutotrophic nutrition-> organism like plants make their own food by photosynthesis, this type of nutrition is autotrophicHeterotrophic nutrition-> living beings like humans take food material from plants like fruits and vegetables . So taking nutrition from other organism is called heterotrophic nutrition The process of acquiring energy for maintenance is said to be as nutrition. The types of nutrition are :autotrophic and heterotrophic Nutrition is the process of intake of nutrients (like carbohydrates, fats, proteins, minerals, vitamins and water) by an organism as well as the utilization of these nutrients by the organism.Nutrition is of two types namely, autotrophic and heterotrophic mode of nutrition.Plants exhibit autotrophic mode of nutrition. They prepare their own food by the process of photosynthesis.Animals exhibit heterotrophic mode of nutrition. Heterotrophic mode of nutrition can be categorised into holozoic mode, parasitic mode and saprophytic modes of nutrition.*Holozoic mode of nutrition is the process in which an organism takes in whole food. The food ingested undergoes digestion, absorption and assimilation. e.g. small organisms like amoeba large organisms like human beings.*Parasitic mode of nutrition is the process in which organism derives its nourishment from host organisms either in liquid form or nutrient form. e.g. Taenia solium is the tape worm living in human intestine.*Saprophytic mode of nutrition is the process in which organism derives its nourishment from dead and decaying matter. e.g. Fungi are heterotrophs that acquire their nutrients from dead and decaying matter by absorption. |
|