Homeostasis: Response to Stimuli
From the examples below, select the examples of cells or organisms responding to stimuli in order to maintain homeostasis.
1.)A plant bending toward a light source
2.)A cell bursting because it takes up too much water
3.)A person shivering when their body temperature is low
4.)A unicellular organism beating microscopic hairs to escape a chemical pollutant in its environment
5.)A cell dying due to a chemical poison
6.)An animal growing larger
7.)Ants moving within their mounds depending upon the time of day
8.)Iguanas laying in the sunlight if their body temperature is low
9.)Birds migrating when seasons change
10.)A person or animal getting sick because of infectious bacteria
part2 fill in the blank
A state of biological balance, or , is important for the survival of individual cells and alike.
Physiological factors such as , water levels, and pH must remain within a certain for cells and organisms to remain healthy and functional.
Regulation of the environment of cells and organisms is carried out through and other control .
choice of words:
location
external
hormones
mechanism
homeostasis
internal
groups
feedback
oganisms
temperature
range

The maintenance of relatively constant internal environment of an organism is called Homeostasis.It is an automatic regulations of the body systems and organs controlled by the brain and some receptors, specific for certain body fluctuations.E.g Thermoreceptors Chemoreceptors etc.

The fluctuations in the body internal systems must be controlled within a narrow limits, for existence of living organism.The brain receives inputs from the receptors, and the outputs from the brain ensures the homeostatic control.

The above examples are typical homeostatic responses by the organisms involved, because the inputs from the receptors send signals to the brain ,and the organisms responded to these with the example above.

Explanation: