how plants manufacture their own food?

Question

hi plzzz answer it because this is my project!!!!

Answer 1

To use the term "food" is a bit of a misnomer. Plants don't eat, persay...
But since I'm feeling in a funny mood I'll answer your question to the fullest of my ability.

The most likely thing for you to be talking about is the whole photosynthesis process.

Plants, much like any other eukaryotic organisms, are made of cells. The cells of plants in particular have organelles in them called chloroplasts... adapted to serve as part of the cell since their integration in the late Precambrian.
As I'm sure you're aware, most plants are green... usually more vividly green on top than on the underside of their leaves. This is due to the combination of photosynthetic pigments (primarily chlorophyll) that reside within those chloroplasts for photosynthesis. Non-green plants typically have different pigments, but they perform a similar function.
Plants will tend to be more vividly coloured on top because most of the photosynthesis takes place in specialised cells called Palisade cells which are lined over the upper surface of the leaf, just beneath the extremely thin epithelium. These palisade cells are rather deep and filled with an especially large number of chloroplasts... hence the overabundance of green.
At least in the case of green plants, the pigments in the chloroplasts, when provided with water through the xylem of the leaf (having come up from the roots) and carbon dioxide from the surrounding atmosphere, will be exposed to the light and use the red and blue portions of the light spectrum (reflecting away the green) to energise a reaction between the two. Carbon from the Carbon Dioxide is combined primarily with the Hydrogen from the water to make simple glucose molecules... and the excess Oxygen is given off to the atmosphere again.
The glucose molecules can then be processed by other cells within the plant and polymerised to make more complex hydrocarbons such as starch (if its alpha-glucose) or cellulose (if beta-glucose). The starch (easily broken down) is typically stored as energy reserves for turning back via respiration later (often during the night when there is no sunlight)... while the cellulose (much tougher) is used as building material for the plant.

Of course... theres more to plant 'food' than that. Most plants typically need a source of nitrates and phosphates at the very least (and many other less vital minerals typically) in order to grow effectively, not least since nitrates are essential for making amino acids (the building blocks of proteins) and phosphates are necessary for DNA and RNA production. Both of these are typically taken up through the roots, ionised in solution in the water. Some plants however have symbiotic nitrogen-fixing bacteria capable of taking nitrogen out of the atmosphere and converting it into nitrates, which can then be used by the host plant... For that matter some nitrates are fixed in the air itself during lightning storms and can be taken up thence.

Yeah... I did mention didn't I?
Plants can only photosynthesize during the day... since there isn't enough light at night to provide the necessary energy. They respire during the night, much as they do the rest of the time, though at a considerably lower level of activity than their daytime photosynthesis.

I hope I haven't forgotten anything there, and that you'll excuse me for being pedantic...

Answer 2

In the process of Photosynthesis. Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy, is associated with the actions of the green pigment chlorophyll. Most of the time, the photosynthetic process uses water and releases the oxygen that we absolutely must have to stay alive. Oh yes, we need the food as well!

Answer 3

plants have leaves which are green. It is because they contain a substance called chlorophyl. It is this chlorophyl that produces food for the plant using the nature's sunlight and the atmospheric carbon di-oxide and releases oxygen. That is why we plant trees in our house compound so that we would get plenty of oxygen for our good health. They also take water and minerals required for processing of food through the roots embedded deep in the soil.

Answer 4

Plants use the green pigment chlorophyll to trap light energy so that they can combine water from the soil (H2O) with Carbon dioxide from the air (CO2) to make sugar (C6H12O6) in their leaves. The oxygen (O2) left over is released into the air or used to break down the sugar again as food.

Answer 5

into the leaves sunlight, water and Carbon dioxide. Out of the leaves, oxygen. Glucose is made from this. It happens in two steps photophosphorylation and calvin cycle, CO2 is used in the calvin cycle and H2O is released.

Answer 6

6H2O + 6CO2 (+sunlight) -> C6H12O6.
Plants use water and carbondioxide to make glucose.
I beleive this photosynthesis is the basis for all plant energy (meaning people energy as well). Is this the '666' equation?

Answer 7

plants manufacture their food by a process called "photosynthesis" by taking carbon dioxide 4m atmosphere & water 4m soil in presence of chlorophyll pigments in the presence of sunlight. the whole process is divided in 2 phases i) light reaction ii) dark reaction. light reaction takes place in grana of chloroplast in presence of light where fixation of CO2 takes place & ATP or NADPH2 are formed as a final product. with the help of ATP & NADPH2 carbohydrate is formed in stroma of chloroplast in absence of light. hence in this way plant synthesis its food in d form of carbohydrate.

Answer 8

the process plants prepare food is called "Photosynthesis"