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What Are Photosynthesis and Respiration?

The diagram given in this Buzzle article is a small pictorial elaboration of the process of photosynthesis that will prove helpful for kids and teenagers to understand this vital process of the plant kingdom.

Plants require carbon dioxide, light energy and water to complete photosynthesis

We also have to be careful when studying green plants because in the light the green parts of these plants carry out photosynthesis as well as respiration.

What Are Photosynthesis and Respiration? - dummies

The following steps walk you through the photosynthesis process that occurs each time the sun’s light reaches the leaves of a plant:

Photosynthesis is a chemical process that occurs in many forms of bacteria and virtually all plants, including aquatic plants and algae. Using just three simple ingredients (carbon dioxide, water, and sunlight) plants and bacteria are able to make their own food. Early forms of algae and bacteria were the first organisms to photosynthesize. Scientists estimate that it takes approximately 2,000 years of photosynthetic activity to "turn over" or replenish all the oxygen in the earth's biosphere.

The figure illustrates how closely photosynthesis and respiration are linked. As you can see, thanks to these two life-sustaining processes, plants and animals depend on each other to survive.

how does photosynthesis make plants grow? | Yahoo …

Only plants can photosynthesize, but both plants and animals depend on respiration to release the chemical potential energy originally captured through photosynthesis.

Photosynthesis is the first stage of energy flow through an ecosystem. You and all other animals on earth rely on the energy that plants store for life. But animals aren’t the only organisms that burn energy. Plants burn energy as they grow, too. In both plants and animals, the process of — which releases stored energy for use — occurs in the mitochondria inside each cell.

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21-10-2007 · How does photosynthesis make plants grow

The drawback to C4 photosynthesis is the extra energy in the form of that is used to pump the 4-carbon acids to the bundle sheath cell and the pumping of the 3-carbon compound back to the mesophyll cell for conversion to PEP. This loss to the system is why C3 plants will outperform C4 plants if there is a lot of water and sun. The C4 plants make some of that energy back in the fact that the rubisco is optimally used and the plant has to spend less energy synthesizing rubisco.

There are about 300 thousand known species of plants

These intermediates are characterized by their resistance to so that they can operate in higher temperatures and dryer environments than . At right, the ranges of CO2 compensation points for the three types of plants are shown. These compensation points are the values at which the plants cease to provide net photosynthesis.

LabBench Activity Plant Pigments and Photosynthesis

The connection to hot and dry conditions comes from the fact that all the plants will close their stomata in hot and dry weather to conserve moisture, and the continuing fixation of carbon from the air drops the CO2 dramatically from the atmospheric concentration of nominally 380 ppm (2004 value). If the CO2 compensation point is lower on the above scale, the plant can operate in hotter and dryer conditions. The limits are placed by the fact that begins to fix oxygen rather than CO2, undoing the work of photosynthesis. C4 plants shield their rubisco from the oxygen, so can operate all the way down to essentially zero CO2 without the onset of photorespiration.

Plant Energy Transformations-Photosynthesis - …

But have you ever wondered, what do plants eat?


The process that plants carry out in the presence of radiant energy in order to create their food is known as photosynthesis.

Photosynthesis- Ideas for Teaching, Resources for …

This process requires the following ingredients.


Soil does not become directly involved in the process of photosynthesis, but the plant absorbs some important ingredients, that are present in the soil.

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