6th Class Science Living organisms and their Habitats Living Organisms and their surroundings

Living Organisms and their surroundings

Category : 6th Class

Living organisms and their surroundings

 

Synopsis

 

 

  • The surroundings or place where organisms live is called habitat. Living organisms depend on habitat for their food, water, air, shelter and other needs.

 

  • The habitats of the plants and animals that live on land are called terrestrial habitat.

 

  • The habitats of plant and animals that live in water are called aquatic habitat.

 

  • The plants which grow in deserts or in very dry places where there is scarcity of water are cactus, agave, asparagus.

 

  • The habitat of animals that live in air for most of the time are called aerial animals e.g., birds.

 

  • The presence of specific features in the body which enable a plant or animal to live or survive is called adaptation, e.g., camel's hump

 

  • Change in the position from one place to another is called movement or locomotion.

 

  • The process in which digested food combines with oxygen to release energy is called respiration.

 

  • The process of removal of waste substances from the body of living beings is called excretion.

 

  • Things which exhibit some characteristics such as need for food, respiration, response to stimuli, movement, growth, and reproduction are called living things.

 

  • An increase in size, height and width is referred to as growth. Growth seems to be common to all living things. For example, a chicken hatched from an egg grows into a hen or cock.

 

  • Changes in body or other organisms caused due to surroundings that makes us or other organisms respond to them, are called stimuli.

 

  • Reproduction is the process by which living things produce more of their own kind.

 

  • Plants, animals and microorganisms together constitute biotic components. Soil, rock, water, light and temperature are some of the abiotic components of our surroundings.

 

  • The plants which grow in water are called hydrophytes, e.g., hydrilla, vallisneria, pistia, otus.

 

  • The plants that grow in moderate conditions of temperature, are called mesophytes.

 

 

Notes - Living Organisms and their surroundings
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