The Rate Of Respiration And Its Effect On The Levels Of All Organisms Essay

The Rate Of Respiration And Its Effect On The Levels Of All Organisms Essay

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Aerobic cellular respiration is required for the survival of all organisms. The rate of respiration differs for different types of organisms, based on the functions of the organisms. Plants, represented by germinated and ungerminated Pisum sativum seeds in this experiment, do not require as much respiration as animals, represented by Zophobus morio larvae, as animals require higher respiration rates to be able to move. As temperature increases in both organisms, the rate of respiration will also increase. In this experiment we observed the effects of iodine on the surface of a cotyledon of a germinated P. sativum seed. We also observed how 20℃ water affected ungerminated P. sativum seeds. Furthermore, we compared the effects of heat on respiration for live and dead P. sativum seeds. Finally, we tested the effects of different temperatures on germinated P. sativum seeds and Z. morio larvae. Our results indicated that germinated P. sativum seeds and Z. morio larvae both had increased respiration rates as temperature increased. Their lower and upper temperature limits differed slightly, based on the organism’s typical environment. In conclusion, we found that it is important for plants and animals to have different respiration rates to suit their functions, such as the ability for animals to move.
In this cellular respiration experiment, we used germinated and ungerminated P. sativum seeds to explore the effects of temperature on respiration rate. P. sativum seeds are cool-weather plants from Europe and Asia. Due to the cool environment they live in, they have a tolerance to cold temperatures. Even with that tolerance, survival is difficult for them. P. sativum seeds that live in temperatures ranging from 25℃ to 45℃ have low surviva...


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...rate of the germinated P. sativum seed increased as temperature increased. Similar to the larvae, the respiration rate began to decrease at around 40℃. This is due to the effects of the seeds getting hot. As the water around the test tube begins to boil, the germinated seed gets dehydrated and starts to die; germinated seeds require water to survive, and dehydration deprives them of water.
Our results indicate that animals, indeed, require higher respiration rates than plants, as animals have movement and plants do not. Animals require a faster respiration rate to help them to make up the energy that they lost when they move around (Lindeman, 1942). Since plants do not tend to move around, the respiration rate must be slower than animals. Therefore, our results indicating that animals have changed their rate of respiration faster than the plants did not surprise us.

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