Question

Help Please ~ 20 points

Which of the statements regarding the nitrogen cycle is true?

Question 20 options:

Nitrogen fixation is the process where atmospheric nitrogen is converted by bacteria into biologically usable forms


Atmospheric nitrogen is absorbed through the leaves of plants


Denitrification occurs when a nitrogen containing compound is produced from nitrogen in the soil


Animals obtain nitrogen through the process of cellular respiration

Answer 1

Nitrogen fixation is the process where atmospheric nitrogen is converted by bacteria into biologically usable forms.

plant can not take nitrogen directly from the leaves.

Answer 2

The correct answer would be the first option.

Nitrogen cycle refers to the cyclic movement of nitrogen in which it travels through different spheres in nature.

Different processes involves in a nitrogen cycle are: nitrogen fixation, ammonification, nitrification, and denitrification.

Nitrogen fixation refers to the process by which atmospheric nitrogen is converted into compounds that can be used by plants. It is achieved by three means: atmospheric processes (such as thundering), industrial, and biological processes.

Biological nitrogen fixation refers to the type of nitrogen fixation in which atmospheric nitrogen is converted into nitrates or nitrites through nitrogen-fixing microorganisms.

For example, Rhizobium (symbiotic nitrogen-fixing bacteria), Azotobacter (free-living nitrogen-fixing bacteria, et cetera.