The plant needs organic and inorganic substances for nutrition. How does the plant get them?

Plants are autotrophs. This means that they are able to synthesize organic substances from inorganic ones. They do not need organic substances. They need water, minerals, carbon dioxide and sunlight. They get water dissolved mineral salts with the help of the root. They receive carbon dioxide using special pores on the leaves. They do not absorb organic matter. This is proved by numerous experiments in which the soil was weighed in a flowerpot with a plant. We can observe this ourselves.