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Why is nitrogen needed in plants? Name two artificial fertilisers which contain nitrogen - Leaving Cert Agricultural Science - Question c - 2016
Question c
Why is nitrogen needed in plants? Name two artificial fertilisers which contain nitrogen. Give two reasons why leaching of nitrogen from soil is undesirable. What ro... show full transcript
Worked Solution & Example Answer:Why is nitrogen needed in plants? Name two artificial fertilisers which contain nitrogen - Leaving Cert Agricultural Science - Question c - 2016
Step 1
Why is nitrogen needed in plants?
Answer
Nitrogen is essential for plants as it is a key component of chlorophyll, the molecule responsible for photosynthesis. It also plays a critical role in the formation of amino acids and proteins, which are vital for plant growth and development. Adequate nitrogen supply leads to increased crop yield and promotes healthy leafy growth.
Step 2
Step 3
Give two reasons why leaching of nitrogen from soil is undesirable.
Answer
- Leaching results in pollution of water bodies, leading to eutrophication, which can cause harmful algal blooms that deplete oxygen in the water.
- Loss of nitrogen from the soil can result in reduced crop yields and stunted growth of plants, posing a threat to food production.
Step 4
What role does clover play in the nitrogen cycle?
Answer
Clover plays a significant role in the nitrogen cycle through a process known as nitrogen fixation. It has symbiotic relationships with nitrogen-fixing bacteria in its roots, which convert atmospheric nitrogen into forms that plants can absorb and use. This enriches the soil with nitrogen, benefiting subsequent crops planted in the same area.