1 / 11

What are the life processes by which the life of an organism is maintained?

Explore the vital life processes like nutrition, respiration, growth, reproduction, and more that keep an organism alive and healthy. Learn about autotrophic and heterotrophic nutrition, metabolism, and the significance of homeostasis.

giglio
Download Presentation

What are the life processes by which the life of an organism is maintained?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What are the life processes by which the life of an organism is maintained? Life functions

  2. Nutrition the taking materials from the external environment and changing them into useful forms (nutrients). 2 types of nutrition: • Autotrophic • Heterotrophic

  3. Autotrophic Nutrition: organisms make their own nutrients: photosynthesis CO2 + water + Solar energy Sugar + O2

  4. Heterotrophic nutrition Organisms cannot make their own nutrients and must find them in their environment. Processes involved: Ingestion: taking in food Digestion: breaking down food Egestion: elimination of indigestible food

  5. 2. Transport • the ability to move materials into, out of and throughout an organism • Involves absorption (taking in) and distribution (circulation) of nutrients.

  6. 3. Respiration • the ability to convert food into energy • Sugar + O2 CO2 + H2O + Energy

  7. 4. Excretion • Removal of wastes from chemical reactions: (Carbon Dioxide,Water & Urea)

  8. 5. Growth The ability to increase in size • Unicellular organisms: cell increases size • Multicellular organisms: the number of cells increases.

  9. 6. Reproduction • When an organism produces new organisms of its own kind. 1. Sexual Reproduction: 2 parents, offspring not identical to either parent. Results in variation.

  10. 2. Asexual Reproduction: one parent. Offspring identical to the parent

  11. Metabolismis the sum total of ALL chemical reactions occurring in an organism to maintain life. Homeostasisis the ability to maintain a balanced, steady-state, internal environment within an organism. Failure to maintain homeostasis leads to illness, disease or even death.

More Related