Correct answer: D) From bacteria living in their roots
Nitrogen is an essential plant nutrients, but it is metabolically unavailable to higher plants and animals. It is available to some species of microorganism by biological nitrogen fixation in which nitrogen is converted to ammonia with the help of enzyme dinitrogenase.
The process of breaking apart the two atoms in a nitrogen molecule is called nitrogen fixation. Plant obtain the nitrogen they need from the soil which is already fixed by the bacteria and archae.
Example: <em>Azobacter</em><em>,</em> Nostac
Answer:
The process that is used to describe this is C. Replication
Explanation:
This model has been developed and worked by many people long ago who were all interested in looking how DNA is the genetic blueprint by which the organism is made up.
Answer:
3
Explanation:
pheripheral nervous systems his correct
Answer:
10
Explanation:
The ratio between the somatic cells and gametes is 2:1. Therefore, since the somatic cell has 20, the gamete would have half: 10.
All visual pigments contain retinal
derived from vitamin A
