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 Aerobic respiration is the chemical reaction used to release energy from glucose. It is called aerobic because oxygen from the air is also needed.

glucose + oxygen → carbon dioxide + water (+ energy)

Plant cells respire, just as animal cells do. If they stop respiring, they will die. Remember that respiration is not the same as breathing, so take care - plants do not breathe.

Also, respirstion and photosynthesis are two different things i.e. Respiration uses oxygen and produces carbon dioxide. Photosynthesis uses carbon dioxide and produces oxygen.Plants respire all the time, whether it is dark or light. They photosynthesise only when they are in the light.


    • Aerobic Respiration
    Aerobic RespirationSeptember 18, 20170 CommentsWhat Is Respiration?

    Respiration is one of the important chemical processes in all the living organisms. It could happen either in the presence of oxygen (aerobic) or the absence of Oxygen (anaerobic-mainly in single-celled or multicellular organisms). For instance, human beings undergo the process of respiration by inhaling oxygen and exhaling carbon dioxide. Many living organisms whether plants or animals undergo this process to use their food energy.

    The general diagram of this process is as shown below-

    ://s3-ap-southeast-1.amazonaws.com/subscriber.images/biology/2016/07/29105433/Aerobic-Respiration.jpg

    Respiration is of two types, namely aerobic respiration, and anaerobic respiration.

    Aerobic Respiration

    Aerobic respiration is a process in which the food glucose is converted into energy in the presence of oxygen. The general equation of aerobic respiration as a whole is as given below-

    Glucose + oxygen ==Carbon-dioxide+ Water+ Energy

    In the above equation, energy is released by the breaking up of glucose by oxygen and as a result of this, the water and the carbon-dioxide are being produced as one of the resultant of the reaction. When one molecule of glucose is broken,  2900 kJ of energy is released. This is used in-turn to create a new type of energy molecule called as the ATP of the Adenosine Triphosphate. The body uses this ATP generated as the energy for various purposes.

    Aerobic respiration process also takes place in animals, plants and other living organisms. Firstly the oxygen enters the cells of plants with the help of stomata. Plants produce their food with the aid of photosynthesis process and thus release energy from it through the respiration process. The below equation describes the process of photosynthesis or the aerobic respiration in plants.

    Carbon-dioxide + water== Glucose + Oxygen

    Anaerobic Respiration

    Anaerobic, the word itself would say about what the process is. Anaerobic respiration is a process which takes place due to the lack of oxygen. In this process, the energy is obtained by the breakdown of glucose in the absence of oxygen. One of the well-known examples of anaerobic respiration is fermentation in yeast

    Aerobic Respiration in plants is exactly the same in plants as it is in humans. This still uses the same organelle (the mitochondria) and releases the same products at the end- CO2 and water. However, as we need to consume glucose to form a reactant for respiration, plants can make it themselves through photosynthesis, therefore these reactants and products become interdependant on each other in a kind of cycle. Respiration in plants still goes through the same stages as in humans as in Glycolysis,Link Reaction, Krebs and Oxidative Phosphorylation. 

    Hope this helps.  

    Aerobic respiration happens when there is plenty of oxygen (normal level in air is 21%). Anaerobic respiration happens where there is less oxygen than this.

    Respiration is the process of producing energy from glucose in the mitochondria inside cells.

    oxygen + glucose ---------->  carbon dioxide + water + (energy)

    All living things have to do this. The difference between plants and animals is that plants can make the glucose themselves through photosynthesis, and animals have to eat food for a source of glucose.

    Releasing the energy from glucose is a multi-step process that involves several different enzymes and a change in the structure of glucose. The equation above is the simplified version that is taught in school. At A-Level and above you would learn the more complicated version.

    In simplified terms the energy is released when the bonds are broken in the molecules.

    All living things get the energy they need from a chemical reaction called respiration. Aerobic respiration is the chemical reaction used to release energy from glucose. It is called aerobic respiration because oxygen from the air is needed.

    The word equation for aerobic respiration is:

    Glucose + Oxygen -----> Carbon Dioxide + Water (+ Energy)

    Plant cells respire, just like animal cells (just remember that respiration is NOT breathing - plants do not breathe!!)

    Respiration is essentially the opposite of photosynthesis, respiration uses oxygen and produces carbon dioxide, whereas photosynthesis uses carbon dioxide and produces oxygen.

    Plants respire all the time (regardless of whether it is light or dark), but:

    • In bright light, the rate of photosynthesis is greater than the rate of respiration.
    • In dim light, the rate of photosynthesis equals the rate of respiration.
    • In the dark, plants only respire, they do not photosynthesise.

    * Anaerobic respiration also takes place in plants (when there is not enough oxygen present for aerobic respiration), for example in the roots of plants in waterlogged soil. Although, aerobic respiration produces more energy per glucose molecule than anaerobic respiration. 


    Aerobic respiration involves oxygen. The consumption of oxygen and glucose leads to the production of carbon dioxide, water and energy. This is respiration. At the same time (during the day) plants also perform photosynthesis, which is basically the same process in reverse: carbon dioxide, water and energy (via sunlight) produce glucose and oxygen. This only happens during the day, and at night the plant only undergoes respiration, not photosynthesis.

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