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Examples of producers include: plants and the seaweed, chlorophyllate beings, which do not feed on another living being obtaining from the sun its energy that it needs for photosynthesis.
In the process of photosynthesis, plants draw water and minerals from the soil through the roots. In most plants, water is carried to the leaves through small tubes, the conductive vessels of raw sap. The leaf also removes a gas from the air, carbon dioxide. Plants then use carbon dioxide, water and sunlight absorbed by chlorophyll (green pigment mostly in leaves) to make sugars. This process is called photosynthesis.
It's not just the sugar you know, used to sweeten coffee and sweets, that is made by plants. Rice, potatoes, bananas, beans, noodles, or any other food of vegetable origin are made up of a type of sugar (called starch) also manufactured by plants in the photosynthesis process.
In addition to sugars, photosynthesis gives rise to oxygen gas. Oxygen is then released into the air or water (in the case of aquatic plants). And finally, animals and plants use this gas and food to produce energy.
We can summarize photosynthesis like this:
|carbon dioxide + water + sunlight -------> sugar + oxygen|
This scheme can be read as follows: carbon dioxide combines with water and the energy of sunlight transforming (the arrow indicates transformation) into sugar and oxygen.
The sugar produced by photosynthesis is called glucose. When this glucose is overproduced, it is "stored" by the plant as starch. Starch is nothing more than several glucose molecules linked together.
The chlorophylled beings are classified as producers because, directly using solar energy, water and carbon dioxide, to produce the substances necessary for the maintenance of their vital activities, ensuring their growth and reproduction.
Until recently, it was believed that the Amazon region was largely responsible for maintaining the earth's oxygen levels and was popularly called the 'lung of the earth'. However, recent research has uncovered the existence of a new “lung”: seaweed. Despite being green, blue, brown, yellow and red, all algae have chlorophyll and photosynthesize. Because they are so numerous, their photosynthesis is attributed to most of the oxygen on the planet.
All living things breathe
Imagine the following situation: after driving for a while, the driver had to stop and refuel the car. Ever wonder where the fuel goes? And why does the car stop if it runs out of fuel?
The fuel mixes with oxygen and is burned to carbon dioxide and water (in the form of steam), which escape through the exhaust. This burning of gasoline or other fuel is called combustion.
It is through breathing that the energy of food is used for the activities of the organism. See a summary of the breath:
glucose + oxygen ----> carbon dioxide + water + energy
The energy that comes from breathing will be used for the realization of all the activities of living beings. You, for example, need energy to grow, walk, run, talk, think and more.
The plant does photosynthesis and also breathes!
Breathing is not only done by animals. All living things breathe, including plants. This means that plants use, in respiration, part of the food they make in photosynthesis. With this they get energy for the growth of the root, stem, leaves, etc. The other part of the energy (glucose) produced by the plant in photosynthesis is stored in the form of starch serving as a reserve for the plant. The seed, for example, will initially grow with the energy of the sugars it stores.