Question

How do autotrophs obtain carbon dioxide and nitrogen to make their food?

Answer 1

The fixation of atmospheric carbon dioxide into simple sugars using the natural way is the main source of plant nutrition. In order to produce amino acids, which are the building blocks of proteins, carbon dioxide enters the stomata. Nitrogen is biologically coupled with carbon, hydrogen, oxygen and sulphur.

Complete answer: Autotrophs have the ability to make their own food through photosynthesis. Often known as producers are autotrophs. Via the stomata, they obtain carbon dioxide from the atmosphere. Nitrogen, an important factor in the synthesis of proteins, is absorbed from the soil through absorption in the form of nitrate and nitrite ions, or by symbiotic bacteria in the root nodules. Here plants use nitrogen fixation as a method to obtain nitrogen. The basic biological process and the initial stage of the nitrogen cycle is nitrogen fixation. In this process, nitrogen in the atmosphere is converted by certain bacterial species such as Rhizobium, Azotobacter, etc. and by other natural phenomena into ammonia (another source of nitrogen). The primary sources of food are plants. Plants synthesise the nutrients obtained from plants using different elements which they obtain from the atmosphere as well as from the soil. Nitrogen is also included in this group of elements. Plants acquire nitrogen from the soil and make use of protein synthesis in the process. In contrast to carbon dioxide and oxygen, it is not possible to obtain atmospheric nitrogen through leaf stomata. Since plants do not directly use the nitrogen gas found in the atmosphere. There are some bacteria that assist in the fixation of nitrogen and other natural phenomena.

Note: Since all plant enzymes are made up of proteins, all of the enzymatic reactions in a plant involve nitrogen. A large part of the chlorophyll molecule is nitrogen, which is therefore essential for photosynthesis. Nitrogen is also required for many vitamins.