🔴CLASS 10 Science Chapter 6 Life Processes 02 NUTRITION | CBSE | ICSE | NTSE | Olympiads EduventureZ

👉FULL PLAYLIST:    • Class 10 Science Life Processes BIOLOGY CL...   ********** 👉Life Processes Complete Theory in pdf: https://www.eduventurez.in/wp-content... 👉Life Processes Questions in pdf: Level 01: https://www.eduventurez.in/wp-content... ********** 👉Level 02: https://www.eduventurez.in/wp-content... ********** 👉Level 03: https://www.eduventurez.in/wp-content... Life processes Nutrition Autotrophic nutrition Heterotrophic nutrition Nutrition in humans Respiration Aerobic respiration Anaerobic respiration Human respiration Transportation Transportation in humans Transportation in plants Excretion Excretion in humans Introduction Life Earth happens to be the only known planet having a life. There are beings wh0 live, die and become part of nature again. The living organism can be differentiated from the inanimate entities on various parameters of life processes. Life Process Maintenance of living organism is essential even if they are moving, resting or even sleeping. The processes which together perform the function of maintenance of ‘life’ are called as life processes. Nutrition, respiration, circulation, excretion are examples of essential life processes. In unicellular organisms, all these processes are carried out by that single cell. In multicellular organisms, well-developed systems are present to carry out the processes. Nutrition Nutrition The process of acquiring food that is needed for nourishment and sustenance of the organism is called nutrition. There are two main modes of nutrition, autotrophic and heterotrophic. Heterotrophic nutrition has subtypes as holozoic, saprophytic and parasitic nutrition. Autotrophic Nutrition If an organism can nourish itself by making its own food using sunlight or chemicals such mode of nutrition is called as autotrophic nutrition. Plants photosynthesize (use light energy) and are called photoautotrophs. Few bacteria use chemicals to derive energy and are called chemoautotrophs. Photosynthesis Photosynthesis is an important process by which food is formed. The plants make food using sunlight and water, which provides nourishment to other organism and themselves. Chlorophyll present in the green parts absorbs light energy. This light energy is used to split water into hydrogen and oxygen. Hydrogen is then used to reduce carbon dioxide into carbohydrates, typically glucose. Chlorophyll is essential for photosynthesis and stomata to facilitate intake of carbon dioxide. Stomata Stomata are pores on the leaves that help in exchange of gases. They are mostly found on the underside of the leaf. Each stoma is guarded by guard cells, which control the opening and closing of the pore. The water content of the guard cells is responsible for their function. Saprophytic Nutrition Some organism feed on dead and decaying organic matter. This mode of nutrition is called saprophytic nutrition. The food is partially digested outside the body and then it is absorbed. E.g. Fungi are saprophytes. Parasitic Nutrition Some organisms feed on the expense of another organism and in turn causing it harm. This is called parasitic mode of nutrition. These organisms live on the body or in the body of a host organism and derive the nutrients directly from the body of the host. E.g. Leech is an ectoparasite while Ascaris is an endoparasite. Cuscuta is a parasitic plant. Nutrition in Amoeba Amoeba feeds by holozoic mode of nutrition. It engulfs the food particle using pseudopodia, the process is called phagocytosis. The engulfed food gets enclosed in a food vacuole. As the food vacuole passes through the cytoplasm, digestion, absorption and assimilation take place. When the food vacuole opens to outside, egestion of undigested food takes place. Nutrition in Paramoecium Paramoecium also exhibits holozoic nutrition. However, they have cilia that help them to engulf the food through the oral groove. A food vacuole is created enclosing the food. It moves through the cytoplasm, the process is called cyclosis. Food digested in the food vacuole is absorbed by the cytoplasm. Undigested food is given out to a tiny pore called anal pore or cytopyge. Nutrition in Humans Alimentary Canal Mouth Teeth Oesophagus & Stomach Small Intestine Large Intestine Peristalsis Digestive Glands Pancreas Holozoic Nutrition life process class 10 vedantu,life process class 10 unacademy,life process class 10 in hindi,life process class 10 ncert,life process class 10 cbse vedantu,life process class 10 biology,life process class 10 cbse,life process class 10 animation,life process class 10 by edumantra,life process class 10 cbse in hindi,life process class 10 cbse ncert,life process class 10 english,life process class 10 full chapter,life process notes for class 10,life process class 1