Sunday 9 December 2012
Friday 7 December 2012
4. Virus
Virus |
Viruses are not alive, so they do not have a need for food like living organisms. Viruses do not have an organized cell structure. They are so light that they can float in the air or water, be passed on to other organisms if touched, and fit anywhere. The virus injects its own DNA structure into healthy cells where new virus cells grow.
There are an example of viruses :
Flu Virus |
Virus in blood |
HIV Virus |
HIV Virus |
Wednesday 21 November 2012
3. Fungi
Fungi is a group of
simple plants that have no chlorophyll .There are some species of fungi that are single celled organisms, and
there are other kinds of fungi that are multi-cellular organisms. Fungi are
made up of filaments called hyphe that are stacked together from end
to end.
Some kinds of fungi live on land and
other types of fungi live in water environments. Since fungi has no
chlorophyll, it can not make its own food. Some types of fungi lives off of
other organisms and are parasites, but other fungi species feed off
of dead and decaying matter. A third kind of fungi lives
with other organisms and neither the fungi or the organism is hurt. This kind
of relationship is called positive symbiosis .
Fungi can be
found on mouldy bread, rotten food, trees and forest floors. For examples ...
Jelly Fungi |
Fungi on the tree |
Mouldy bread |
Fungi on the rotten food |
Mushroom-types of fungi |
Tinea Foot :
A group of fungi
Sunday 11 November 2012
2. Protozoa
There are an example of protozoas
Tissue associated by protozoa
The word "protozoa" mean "little". The most abundant animals in the world are protozoa.
Their role in ecology is a very important one. Protozoa also include many parasites.
Protozoa have one cell, there are more than 50,000 species in the protozoa
group. Most protozoa
are found mainly in ponds, soil, lakes and rivers. Some of them eat other
microorganisms as food.
There are an example of protozoas
protozoa under microscope |
protozoa in the soil |
protozoa in the water |
Tissue associated by protozoa
Subscribe to:
Posts (Atom)