POWERPOINT PRESENTATION –AUTOTROPHIC AND HETEROTROPHIC NUTRITION
Nutrition is the process of procuring andutilisation of food to produce energy. Food is thematerial or substance which is needed by livingorganisms for obtaining energy and raw materialsto produce biochemical required for development,growth and maintenance of the body. Various components of the food havevarious functions like providing energy , materialsfor body building, maintenance and regulation ofmetabolism . These components of food are callednutrients.
Nutrition is of two types :- Autotrophic Nutrition Heterotrophic Nutrition NUTRITION Autotrophs Heterotrophs (Make their food themselves) (depend on others for food) Parasite Saprophyte Holozoic (Amoeba) (Fungus) (Humans)
AUTOTROPHIC NUTRITIONIt is the process by which autotrophs(organismswhich practise photosynthesis) take in substancesfrom outside and convert them into the storedforms of energy. This material is taken in the formof Carbon dioxide and Water to formCarbohydrates. The Carbohydrates which are notused immediately are stored.
Photosynthesis – The process by which plants maketheir own food in the presence of sunlight with thehelp of Chlorophyll, Carbon dioxide and Water isknown as Photosynthesis.
Q1. How many types of Nutrition are there. Name them.Ans. There are two types of Nutrition namely Autotrophicnutrition and Heterotrophic Nutrition.Q2. Define Photosynthesis.Ans. Photosynthesis is the process by which Plants maketheir food in the presence of sunlight with the help ofCarbon Dioxide and water.Q3. What are stomata?Ans. Stomata are small pores found on the surface ofLeaves of plant for Exchange of Gases and Transpiration.Q4. Name the juices secreted by Gastric Glands.Ans. Juices secreted by Gastric Glands are HydrochloricAcid, Enzyme Pepsin and Mucus.Q5. Define Villi.Ans. Villi are small finger like structures foumd in the smallintestine. They help in Absorption.