The process of Digestion starts from Mout Teeth crushes and breaks down food into smaller pieces. The salivary glands secrete Saliva which contains an enzyme called salivary amylase which digest the starch present in food The process of Digestion starts from Mouth. Paramecium is an unicellular organism, the cell has definite shape and food is taken in at a specific spot by the movement of Cilia which cover the entire surface of the cell. The remaining undigested material is moved to the surface of the cell and thrown out. The simple soluble food is absorbed by cytoplasm of Amoeba Various enzymes from cytoplasm enter into food vacuole and breaks down complex substances into simpler ones. Pseudopodia fuse over food particle performing a food. Amoeba takes in food using temporary finger like extensions of the cell surface called as Pseudopodia In this the organism takes in Complex organic food by a process called Ingestion, which is then digested and absorbed into the body and waste, undigested part is thrown out of the body through Egestion. In this organism obtains food from the body of another living organisms (host) without killing it. In this the organism obtains its nutrition from decaying organic matter of the dead Plants and Animals Nutrition in Animals Heterotrophic Nutrition Saprophytic Nutrition Water flows out of → Stomata Close guard cells ⚫ Surrounded by a pair of guard cells which control opening and closing of stomata. Tiny Pores present on the surfaces of leaves Water - Water required for photosynthesis is absorbed by roots from soil. Carbon Dioxide - The green plants take Carbon Dioxide from air through Stomata.Ģ. The process of photosynthesis requires two raw materials:ġ. Ques) Where do plants get each of the raw materials required for photosynthesis? Reduction of Carbon Dioxide by Hydrogen to form Carbohydrates like Glucose. (2) Conversion of Light Energy to Chemical Energy and splitting of Water molecules into Hydrogen and Oxygen OXYGEN gas is released during PHOTOSYNTHESIS.Ībsorption of Light Energy by Chlorophyll.⚫The process by which green plants takes in inorganic substances like CARBON DIOXIDE (CO2) and WATER (H₂O) and convert them into food (like glucose) in the presence of SUNLIGHT and CHLOROPHYLL is called PHOTOSYNTHESIS. Substances and obtain there own food from other organisms, this process is called heterotrophic nutrition. Organisms that can't synthesize there own food from simple inorganic. The process by which organism synthesize its own food from simple inorganic substances like carbon dioxide and water present in the surrounding environment is called as autotrophic nutrition. Nutrients Group of food in which protein, fats, vitamins and minerals are involved is called nutrients. The process of intake of nutrients (like carbohydrates, fats, proteins, minerals, vitamin and water) by an organism as well as the utilization of these nutrients by the organism. These include nutrition, respiration, transportation, excretion. The basis function performed by living organisms to maintain their life on this Earth.
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