YOU TUBE VIDEO: https://youtu.be/qkc4veRQ8cw GOOGLE FORM WORKSHEET: https://forms.gle/CqxrYZr1ukewvLhN8 Nutrition is the process of taking food and using it for obtaining energy, growth and repair of the body. Animals depend on other organisms for getting their food. They cannot make their own food, so they are heterotrophs.

1. NUTRITION IN ANIMALS-1
MODE OF NUTRITION IN ANIMALS
CLASS-VII
NCERT
MODE OF NUTRITION IN ANIMALS NANDITHAAKUNURI

2. Nutrition is the process of taking food and using it for obtaining energy,
growth and repair of the body. Animals depend on other organisms for
getting their food. They cannot make their own food, so they are
heterotrophs.

3. Animals Obtain their Food from Plants and other Animals
Animals need readymade food and therefore they depend on either plants
or other animals which they eat. For example, snake eats frogs, insects
eat dead bodies of animals, birds eat worms and insects etc.
Modes of Nutrition
The method of obtaining food by an organism is called modes of
nutrition. There are two modes of nutrition. They are:
1) Autotrophic 2) Heterotrophic

4. Heterotrophic Mode of Nutrition
All the animals cannot make their own food from simple inorganic
material like carbon dioxide and water. They depend on other organisms
for food. This is called heterotrophic mode of nutrition. The organisms
which depend on other organisms for food are called heterotrophs. For
example, man, dog, cat, deer, tiger, cow, non-green plants like yeast are
all heterotrophs. They depend on plants or other organisms for their food.

5. Types of Heterotrophic Nutrition
There are three types of heterotrophic mode of nutrition. They are:
i) Saprotrophic Nutrition ii) Parasitic Nutrition iii) Holozoic Nutrition
Saprotrophic nutrition
Sapro means rotten. There are organisms which feed on dead and
decaying organic matter for obtaining their food. These organisms feed
on rotting wood of dead and decaying trees, rotten leaves, dead animals,
rotten bread etc. Such organisms are called saprophytes. Fungi and
many bacteria are saprophytes

6. Parasitic Nutrition
It is that mode of nutrition in which organisms feed on other living
organisms, called their host, without killing them. The organisms which
obtain food in a manner are called parasites. Parasites harm the host,
which may be a plant or an animal. Parasites cause diseases to mankind,
domestic animals, and crops. Fungi, bacteria, a few plants like cuscuta
and some animals like plasmodium and roundworms undergo parasitic
mode of nutrition.

7. Different Modes of Taking Food.

8. THANK YOU
BY
Ms. NANDITHA AKUNURI
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