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| 1. |
Why nitrogen is not found near water logged areas for plants? |
| Answer» The visual symptoms of\xa0nitrogen deficiency\xa0mean that\xa0it\xa0can be relatively easy to detect in some\xa0plant\xa0species. Symptoms include poor\xa0plant\xa0growth, and leaves become pale green or yellow because they are unable to make sufficient chlorophyll. Leaves in this state are said to be chlorotic.\xa0About 78 per cent of the air is\xa0nitrogen\xa0gas. However,\xa0nitrogen\xa0is too unreactive to be used directly by\xa0plants\xa0to make protein. It must be converted into soluble ions, such as nitrates.\xa0Nitrogen-fixing bacteria in root nodules are able to do this. | |