Characteristics of living organisms
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Living organisms exist in various types across different environments from cold mountains to hot springs. They cooperate and compete with members of their own and other species within their habitat. Growth and reproduction are defining characteristics of living things, though growth can also occur in some non-living things through accretion. Metabolism, response to stimuli, and use of genetic material further distinguish living from non-living entities.
Characteristics of living organisms
- 3. Living organisms are of various types which inhabit in different places right from cold mountains to hot springs. These organisms of a place belonging to same and different species cooperate and con鍖ict among themselves. Organisms are omnipresent (everywhere)
- 4. Biosphere
- 8. Growth is defined as increase in number and mass of individuals. Growth is de鍖ned as increase in number and mass of individuals.
- 9. Unicellular organisms grow in size before they divide. Unicellular organisms grow in size before they divide.
- 10. Increase in number of cells in unicellular forms is both growth and reproduction which can be noticed by counting the number of cells under microscope as in case of bacteria. Increase in number of cells in unicellular forms is both growth and reproduction which can be noticed by counting the number of cells under microscope as in case of bacteria.
- 11. Multicellular organisms grow by cell division. Multicellular organisms grow by cell division
- 12. Plant growth is continuous as long as it lives. Plant growth is continuous as long as it lives. Sequoia
- 13. Animals show growth only upto certain stage. But cell divisions occur to replace the lost cells. Animals show growth only upto certain stage. But cell divisions occur to replace the lost cells.
- 14. In living organisms growth is inside. In living organisms growth is inside.
- 15. Growth of non-living organisms is not interior but it is exterior due to deposition of materials on the surface of existing material. Growth of non-living organisms is not interior but it is exterior due to deposition of materials on the surface of existing (Accretion)
- 16. Hence growth is the feature of both living and non-living beings. Growth is the feature of both living and non-living beings.
- 17. Reproduction is formation of new individuals from the existing individuals. It is exclusive feature of living organisms. Reproduction is the formation of new individuals from the existing individuals. It is exclusive feature of living organisms.
- 18. Worker Bees, Mules and infertile humans are incapable to reproduce. Worker Bees, Mules and infertile humans are incapable to reproduce.
- 19. Photosynthesis
- 20. Respiration
- 21. Biomolecules
- 22. All living organisms show metabolism except Viruses.
- 23. The metabolic reactions carried out in a test tube (in vitro) but not in a cell or tissue is a living reaction but not a living thing.
- 24. Cellular organization is essential for metabolism.
- 27. Irritability is response of an organism to stimuli. Living organisms sense the environment. Irritability Irritability is response to stimulus
- 28. Touch me not - MIMOSA PUDICA
- 29. Animals sense the environment with their sense organs. Sense Organs
- 30. Plants respond to factors like light, temperature, water, pollutants and other organisms. Plant Movements
- 31. Light influences reproduction in seasonal plant and animal breeders. Photoperiodism & Circadian rhythms
- 32. Consciousness is awareness of organisms to surroundings. It is the property of living organisms. Humans are self-conscious. Consciousness
- 35. All living organisms are linked to each other by sharing DNA as common type of genetic material.