Life Processes In Animals
All animals require food for obtaining energy, growth, repair of damaged
parts and functioning of the body. The process of taking food by an animal
and its utilisation in the body is called animal nutrition
Different Ways of Taking Food
Different types of animals show different modes of nutrition. Some animals filter tiny
food particles and feed upon them, while some swallow the animals they prey upon. The
mode of nutrition in different animals depends upon the special structure or organ for
taking food
.The process of breakdown of complex components of food such as carbohydrates
,proteins and fats into simpler substances is called digestion. This occurs n along tube
called alimentary canal
*There are two methods of digesting food, i.e. mechanical method (including chewing
and grinding of food in mouth) and chemical method (addition of digestive juices to the
food by the body itself).
The alimentary canal can be divided into various compartments:
● The buccal cavity or mouth
● Food pipe or oesophagus
● Stomach
● Small intestine
● Large intestine
● Rectum
● The anus
The main digestive glands which secrete digestive juices are salivary glands, liver and
pancreas.
● The process of taking food into the body is called ingestion.
● The process by which the food is broken down into smaller substances is
called digestion.
● The process by which the digested food passes through the intestinal wall
into the bloodstream is called absorption.
All animals require food for obtaining energy, growth, repair of damaged
parts and functioning of the body. The process of taking food by an animal
and its utilisation in the body is called animal nutrition
Different Ways of Taking Food
Different types of animals show different modes of nutrition. Some animals filter tiny
food particles and feed upon them, while some swallow the animals they prey upon. The
mode of nutrition in different animals depends upon the special structure or organ for
taking food
.The process of breakdown of complex components of food such as carbohydrates
,proteins and fats into simpler substances is called digestion. This occurs n along tube
called alimentary canal
*There are two methods of digesting food, i.e. mechanical method (including chewing
and grinding of food in mouth) and chemical method (addition of digestive juices to the
food by the body itself).
The alimentary canal can be divided into various compartments:
● The buccal cavity or mouth
● Food pipe or oesophagus
● Stomach
● Small intestine
● Large intestine
● Rectum
● The anus
The main digestive glands which secrete digestive juices are salivary glands, liver and
pancreas.
● The process of taking food into the body is called ingestion.
● The process by which the food is broken down into smaller substances is
called digestion.
● The process by which the digested food passes through the intestinal wall
into the bloodstream is called absorption.
