CONTINUITY OF AN
Organism on the earth are predicted to have been existed
for million years. The fact show that there is continuity of
life of organism.
How do organisms sustain their continuity of life?
The continuity of an organism life occurs through internal
factors include adaptation and reproduction while
external factor is natural selection.
The environment surrounding organism always
changes, such as temperature, sunlight, water and food.
These changes will influence the continuity of an
organism’s life. How can such organism survive?
An organism that is able to survive is an organism
which is adaptable. Adaptation is the ability of living
organism to adjust itself to its environment and then
inherit that ability to its descendants.
Adaptation is a characteristic development of an
organism which make it more suited to live and
reproduce in an environment.
Living organism have different adaptive ability, some
adapt easily while others difficult to adjust.
Living organism that have high adaptive ability will easily
adjust to its environment. The organism with low adaptive
ability will have a hard time adjusting to its environment
and may not survive or even extinct.
There are 3 adaptation processes which are performed by
organism to survive in order to preserve their species, they
are : morphological adaptation, physiological adaptation, and
Morphological Adaptation is an adaptation of the
shape of body parts or body organs of organisms to
their environment .
For example : shapes of birds beak, shapes of birds foot,
types of insects mouth, and streamline fish shapes.
* The shapes of bird’s beak is adjusted according
to the kinds of food they eat.
Biting or chewing type
Insects which bite, have
strong upper and lower jaw,
for examples : grasshopper
and cockroach, cricket.
Sucking or siphoning type
These insects have a long
extracting organ that can be
curled, for example : butterfly.
Butterflies use this mouth part
to extract nectar from the
flowers, true bug use it to
extract fluids from plants and
Licking or sponging type
These insects have organs to
lick or called the lips, for
examples : bees and flies.
Piercing and sucking type
These insects have strong,
long, and sharp jaws, for
examples : mites and
* Fish with streamlined bodies usually fast swimming that may
swim in high speeds most of the time. They can move into one to
another areas to hide, to escape from predators or to get food that
cannot be reached by other fish.
* Even tough a penguin, an octopus, and a squid do not have a
body shape like fish, they can change their body into a
streamlined shape when they swim quickly in the water.