What is nutrition ? Explain any two types of nutrition?
Answers
Nutrition is the process by which an organism procures its nourishment, the supply of nutrients required by its body and cells to stay alive. 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
Answer:
When we are not doing apparent activity that time also we need energy to maintain a state of order in our body.We also needs materials from outside in order to grow,develop, synthesise protein and other substances what ever we take to gain enery are considered as nutrition.
the two types of nutrition are -:
1. Autotrophic nutrition
it is the process by which autotroph take in substances from the outside and convert them into stored forms of energy.
2. Heterotrophic nutrition
in this process some organisms break down the food materal outside the body and then absorb it. others take in whole material and break it down inside their bodies.