Class 10 cbse science life processes9/2/2023 ![]() The process which releases energy from the food absorbed by the body. Taking of food inside the body and converting it into smaller molecules which can be absorbed by the body. Basic life processes common to all living organisms are: Basic life processes Life Processes The basic functions performed by living organisms to maintain their life on this earth are called life processes. The plants can only move parts of their body such as leaves, flowers, roots and shoots.Animals can move from one place to another or they can move their body parts.The movements in animals are fast and can be observed easily but the movements in plants are slow and observed with difficulty.The most important criterion to decide whether something is alive or not is the movement.All the plants and animals are alive or living things.Humans consist of the alimentary canal which starts from the mouth and ends at the anus. Parasitic nutrition is nutrition in which an organism feeds on a living host.Saprophytic nutrition is nutrition in which organisms feed on dead and decaying matter.Holozoic nutrition is a type of nutrition where an organism takes in whole food and breaks it inside the body.In this mode of nutrition, an organism is unable to synthesise its food. Overall Equation of Photosynthesis Heterotrophic Nutrition The overall equation of photosynthesis is:įig.2. ![]() The stomata/stoma is surrounded by a guard cell which guards the opening and closing of stomata. Leaves contain small openings known as stomata which helps in the exchange of gases. Finally, reduction of carbon dioxide into carbohydrates.Splitting of water into hydrogen and oxygen.Conversion of light energy into chemical energy.The steps of photosynthesis are as follows. ![]() They contain a green colour pigment known as chlorophyll that traps sunlight for photosynthesis. The site where photosynthesis occurs is known as chloroplast. Water is taken up from the soil through the roots. Sunlight provides energy, chlorophyll is used to absorb the sunlight, carbon dioxide is reduced to carbohydrates and water is oxidised to release the oxygen. Now the question arises how does autotrophic nutrition occur in plants using photosynthesis?įor photosynthesis to occur, carbon dioxide, water, sunlight and chlorophyll are the required raw materials. Organisms that use the autotrophic mode of nutrition are known as autotrophs. For example, green plants use an autotrophic mode of nutrition. It is a type of nutrition in which inorganic materials such as carbon dioxide, is used up to synthesise organic food by a process known as photosynthesis. The two most common types of nutrition are autotrophic nutrition and heterotrophic nutrition. that are necessary for the survival of the living organisms are known as life processes.
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