2. Multi-cellular Organism
• Organisms that consists of
more than one cell are known
as Multi-cellular Organisms
• Multi-cellular Organisms grow
by dividing their cell
Multi means more than one cell
3. Plant breathing
• Plants have tiny pores called
“Stomata” on the underside of the
leaf that help them in exchange of
gases like carbon-dioxide and
oxygen.
• In this way the plants breathe day
and night, but breath out oxygen
during the day.
4. Tropism
• The growth
movement of plant
parts like roots,
stem , leaves etc.
• In response to
external stimulus
called tropism
The air blow towards the leaf doesn’t grow forward,
5. Biotic And Abiotic components
• All the plants, animals
and other living
organisms and form the
“Biotic’’ components of
the habitat.
Biotic components Abiotic components
Things such as light,
heat, temperature, soil
and water form the
“Abiotic’’ components.