Decomposition of organic nitrogen of dead plants and animals into ammonia is called

Which of the following is an amide involved in nitrogen metabolism by plants?

1. Methionine

2. Cysteine

3. Serine

4. Asparagine

Nitrococcus is

1. Photosynthetic

2. Nitrifying bacteria

3. Helpful in nitrate assimilation

4. Nitrogen fixing bacteria

For each molecule of ammonia produced by nitrogenase, the number of ATP molecules required are:
1. 4
2. 8
3. 12
4. 16

All the given statements are correct with respect to fate of ammonia, except

1. Glutamine and asparagine are two most important amides in plants

2. $\mathrm{\alpha }$-ketoglutaric acid provides carbon skeleton for the process of reductive amination process

3. Amides are transported through sieve tubes

4. Glutamic acid is the main amino acid that provides NH₂ group during transamination process

Which of the type of fixation leads to fixation of atmospheric nitrogen to ammonia?

What type of reaction is shown in the given figure?


1. Deamination
2. Reductive amination
3. Transamination
4. Nitrogenation

In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:

1. Ammonia

2. Glutamate

3. Nitrates

4. Ureides

Plant prefers to absorb nitrogen in form of nitrate from
soil, then it is reduced to ammonia. This reduction to
ammonia takes place in which part of plant
1. Root.
2. Leaf.
3. Stem.
4. Any

Nitrogen:
Find the incorrect one.
1. Plants compete with microbes for it.
2. It is a limiting nutrient for both natural and agricultural ecosystem
3. Nitrogen has triple covalent bonds
4. Nitrogen fixation is conversion of nitrogen into nitrate