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Food requirement
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- All living organisms, including plants and animals, depend on food for energy.
- Food is also required for carrying on other life processes that go in inside all organisms.
 Plants respond to light (Stimuli)
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Growth
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- All plant organisms show growth and mature with time.
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Respiration
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- It is necessary for all living organisms.
- Exchange of gasses in plants mainly takes place through leaves.
- The leaves take in air through tiny pores in them and use the oxygen.
- They give out carbon dioxide to the air.
- The amount of oxygen released in the process of food preparation by plants is much more than the oxygen they use in respiration. Respiration in plants takes place day and night.
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Stimuli response
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- Changes in our surroundings that make us respond to them, are called stimuli.
- Flowers of some plants bloom only at night.
- In some plants flowers close after sunset, in some plants like Mimosa (touch-me-not) leaves close or fold when someone touches them.
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Excretion
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- This is another characteristic common to all organisms.
- Some plants remove waste products as secretions while other plants store the waste products within their parts in a way that they do not harm the plant as a whole.
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Reproduction
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- Many plants reproduce through seeds, which can germinate and grow into new plants.
- Some plants also reproduce through parts other than seeds.
- Example: A part of a potato with a bud, grows into a new plant.
[A seed from a plant germinates into a new plant]
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Movement
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- Plants are generally anchored in soil so they do not move from one place to another.
- However, various substances like water, minerals and the food synthesized by them move from one part of the plant to another within the plant habitat. .
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Death
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- Like all living beings, even plants die.
- Because organisms (plants and animals) die, particular types of organisms can survive over thousands of years only if they reproduce their own kind.
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