• The body of a living organism is made of cells.
• A cell is considered as the basic unit of all organisms.
• Depending on the number of cells they consist, organisms can be unicellular or multicellular.
• Living things show structural organization, that is, the bodies of multicellular organisms have the following organization.
• There are different organ systems present in our body:
1. Respiratory system
2. Circulatory systemRead More...
MOVEMENT IN ANIMALS
• Without the ability to move, there would be no life on Earth.
• For living, animals have occupied almost all the places that are suitable for life by moving around. Like;
1. The underground soil
2. The surface of the groundRead More...
MOVEMENT IN COCKROACH
• The body of a cockroach is covered with a hard outer skeleton.
• Cockroaches have a pair of antennae that help them to smell things.
• They also have a pair of cerci that can detect the slightest of movements and warn them of any danger from behind.Read More...
MOVEMENT IN EARTHWORM
• An earthworm is an invertebrate.
• It has a long, tube-like body.
• It has no bones.
Tube-like body of an earthworm
• Earthworms live in moist soil which contains organic matter.
• Earthworms do not have eyes or ears but they have a mouth and are sensitive to heat, light and touch.
• This adaptation is important for the survival of an earthworm.Read More...
MOVEMENT IN SNAIL
• A snail is a very slow-moving animal.
• Snails have a shell, inside which they can hide to protect themselves from heat and enemies.
• The shell is the outer skeleton, but is not made of bones.
• They also have a pair of tentacles that bear eyes at the tips.
• Snails move using a muscular organ called the foot.