Hetereotrophic mode of nutrition for class 10th biology

2. Hetereotrophic mode of nutrition:- In this mode of nutrition organisms obtain their food from other organisms. These organisms are totaly dependent on other organisms for food. e.g Animals,Human beings, Fungi

It has following sub types

1. Holozoic nutrition:- In this mode of nutrition an organism englough food and than digest it inside the body. e.g human being , Bird

2.Saprophytic Nutrition:- In this mode of nutrition organisms obtain their food from dead and decaying organic matter. These organisms grow on dead organic matter and screate digestive enzymes on the organic matter to digest it and than absorb the digested food. e.g Fungi (Mushrooms, bread moulds)

3.Paracitic mode of nutrition:-In this mode of nutrition organism takes the digested food of other organism by living on it. E.g Ascaris, E.coli, Tap worm , liver flukes ,lice etc . The organisms showing this type of nutrition are called as Paracites and the organism on which paracite lives is called as Host.

Paracites are of two types

●Exo-paracites:-The paracites which lives outside on the body of host are called Endo-paracites. e.g Lice

●Endo-Parcites:-The paracites which lives inside the body of host are called Endo-paracites. e.g Ascaris, E.coli , liver flukes

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Absorption of Nutrients in Small Intestines

The digested food is now in simple form and is ready to use by cells. The inner wall of small intestines is called as Mucosa, it has numerous finger like projections called as Villi (singular- villus), which in-turn has finger like projections called as micro-villi. The purpose of villus is to provide large surface area for nutrient absorption. Villi have large network of blood capillaries, where the nutrients are absorbed in blood by diffusion.Most of the nutrients are absorbed in jejunum. except Iron is absorbed in duodenum vitamin B12 and bile salts are absorbed in the terminal ileum. Through blood digested food reaches to each and every cell of the body.

Photosynthesis for class 10th

● Photosynthesis ( Photo=Light) :-The biological process In which the plants synthesis their own food with the help of SunLight, Carbon Dioxide and water.It is the characteristic feature of plants. Photosynthesis takes place in the leaves of plants.where the sunlight is traped by green pigment chloroplast.Carbon Dioxide is taken from Atmosphere through Minute pore On leaves called stomata and water is absorbed by roots from soil and conducted to leaves through xylum to leaves. Oxygen is released after Respiration through stomata. Examine the below Diagram

Human excreatory system for class 10th

Excreation:- The process of removal of metabolic wastes from the body of an organism is called as Excreation. The full fludged system is concerned with the removal for metabolic wastes known as excreatory system. Here we will descuss Human excreatory system. In Human beings the excreatory organ is kidney. There are two kidneys in human beings, named as left and right kidney. These two kidneys filter the blood taking wastes out from the blood. The kindneys are bean shaped. Nephron is the structural and functional unit of kidney. Renal artery is a blood vessel which supplies blood to the kidney for filteration. The filtered blood is taken to the heart through Renal vein. Ureter:- Each kidney has a narrow, whitish, tubular struction about 25 to 30cm long called "Ureters" opening in a somewhat pear shaped muscular sac like structure called " Urinary Bladder" Ureters carry metablic waste "urine" from their respective kidneys to the Urinary...

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