University:
Acadia University
Course:
BIOL 2663 | Marine Biology
Academic year:

2024
Views:

158

Pages:

2
Author:

Nabila n.

Quiz-nitrogen ﬁxation Name: Students 14/03/2025 1. What is nitrogen fixation? [ ] Conversion of water into hydrogen [ ] Conversion of oxygen into carbon dioxide [ ] Conversion of atmospheric nitrogen into ammonia [ ] Conversion of ammonia into atmospheric nitrogen 2. Which organisms primarily carry out nitrogen fixation? [ ] Algae [ ] Nitrogen-fixing bacteria and archaea [ ] Viruses [ ] Fungi 3. Why is nitrogen fixation important for plants? [ ] lt provides carbon for photosynthesis [ ] lt provides oxygen for respiration [ ] lt makes nitrogen available for growth [ ] lt increases water uptake 4. What is a common example of a plant involved in nitrogen fixation? [ ] Conifers [ ] Legumes [ ] Ferns 1 [ ] Mosses 5. How does nitrogen fixation impact ecosystems? [ ] Reduces plant growth [ ] Enhances productivity and sustainability [ ] Increases soil acidity [ ] Decreases soil fertility 6. What is the most common process of nitrogen fixation in ecosystems? [ ] Physical processes [ ] Industrial processes [ ] Biological processes [ ] Chemical processes 7. What role do nitrogen-fixing bacteria play in the nitrogen cycle? [ ] They produce oxygen [ ] They convert atmospheric nitrogen into usable forms [ ] They absorb carbon dioxide [ ] They decompose organic matter 8. Which type of relationship is seen between nitrogen-fixing bacteria and legumes? [ ] Symbiotic [ ] Competitive [ ] Commensal [ ] Parasitic 2