Nutrition in Animals
Animals are heterotrophs and hence theydepend
on other organisms (plantsand other animals) for
their food.
• All the animals can be divided into three groups
on the basis of their food habits. These are:
1. Herbivores
2. Carnivores
3. Omnivores
Herbivores: Those animals which eat only
plants are called herbivores. Examples are
Goat, Cow, and Deer etc.
Carnivores: Those animals which eat only other
animals as food are called carnivores.
Examples are Lion, Tiger, and Lizard etc.
Omnivores: Those animals which eat both,
plants and animals are called omnivores.
Examples are Man, Dog and Crow etc.
• It is the energy of sun which provides food for
plants, and animals.
, Different steps in the process of nutrition in animals
There are five steps in the process of nutrition in
animals.
1. Ingestion: The process of taking food into the
body is called ingestion.
2. Digestion: the process in which the food
containing large, insoluble molecules is broken
down into small,water soluble molecules is
called digestion.
3. Absorption: The process inwhich the digested
food passes through the intestinal wall intobloo
stream is called absorption.
4. Assimilation: The process in which the absorbed
food is taken in by the body cells and used for
energy, growth and repair is called assimilation.
5.Egestion: The process in which the undigested
food is removed from the body is called egestion
Animals are heterotrophs and hence theydepend
on other organisms (plantsand other animals) for
their food.
• All the animals can be divided into three groups
on the basis of their food habits. These are:
1. Herbivores
2. Carnivores
3. Omnivores
Herbivores: Those animals which eat only
plants are called herbivores. Examples are
Goat, Cow, and Deer etc.
Carnivores: Those animals which eat only other
animals as food are called carnivores.
Examples are Lion, Tiger, and Lizard etc.
Omnivores: Those animals which eat both,
plants and animals are called omnivores.
Examples are Man, Dog and Crow etc.
• It is the energy of sun which provides food for
plants, and animals.
, Different steps in the process of nutrition in animals
There are five steps in the process of nutrition in
animals.
1. Ingestion: The process of taking food into the
body is called ingestion.
2. Digestion: the process in which the food
containing large, insoluble molecules is broken
down into small,water soluble molecules is
called digestion.
3. Absorption: The process inwhich the digested
food passes through the intestinal wall intobloo
stream is called absorption.
4. Assimilation: The process in which the absorbed
food is taken in by the body cells and used for
energy, growth and repair is called assimilation.
5.Egestion: The process in which the undigested
food is removed from the body is called egestion
