Summary of living things
Living things, described as alive, must perform several vital activities: movement, respiration, nutrition, sensitivity, reproduction, growth and excretion.
All living things are classified into groups called kingdoms.
As an example, we know humans are alive, but trees are alive too:
|Movement||Can run||Trees grow towards sunlight, gravity and water. Leaves drop with lack of water|
|Respiration (the opposite of photosynthesis)(note: this is not breathing)||Humans use glucose to make energy (ATP) both aerobically (with oxygen) and anaerobically (without oxygen and produce lactic acid and energy)||Trees use glucose to make energy (ATP) both aerobically (with oxygen) and anaerobically (without oxygen and produce ethanol and energy)|
|Nutrition||Humans eat||Nutrients are the food that oak trees need for growth, such as taking potash, nitrogen and potassium from the soil|
|Sensitivity||Humans sense their surroundings and react accordingly such as cold and heat or taste||Oak trees are sensitive to light, moisture and gravity|
|Reproduction||Have babies||Reproduce asexually through cultivation and sexually through the exchange of pollen|
|Growth||Average height 1.7m||Grow up to 20 to 40m high|
|Excretion||Go to the toilet||Waste removal from stomata in leaves or with dead leaves falling away in autumn|