Characteristics of living things Flashcards
Movement definition and example
An action by a organism or part of an organism causing a change in position or place
Example: Plants moving towards the sun and roots towards the water
Respiration definition and example
Chemical reactions that break down glucose in living cells to release energy
Example: Plants use oxygen in the air to turn food into energy
Sensitivity definition and example
The ability to detect or sense changes in the environment and to make responses
Example: Humans react to temperature
Homeostasis definition and example
The ability to maintain a constant internal environment
Example: Body is always 37 degrees
Growth definition and example
Increase in cell number or cell size or both
Example: Plants grow throughout their lives
Reproduction definition and example
The production of more organisms
Example: Animals have offspring
Excretion definition and example
Removal of metabolic waste
Example: Animals excrete through their lungs, kidneys like urea and carbon dioxide
Nutrition definition and example
Nutrition is when the food is consumed by the organisms
Example: Plants make their own food (glucose) using sunlight
Why is movement important?
Search of food/habitat
Why is respiration important?
Produces energy needed and so releases energy in cells, provides oxygen to the cells, and expels carbon dioxide
Why is sensitvity important?
Allows organisms to respond to changes in their environment
Why is homeostasis important?
To maintain the internal environment without being overcome by external stimuli that can disrupt the balance.
Why is excretion important?
To prevent accumulation of harmful substances in the body
Why is reproduction important?
R-To ensure the conductibility of the species
Why is nutrition important?
Growth and repair of the cells
