Column - I | Column - II | ||
(A) | Nitrococcus | (I) | Denitrification |
(B) | Rhizobium | (II) | Conversion of ammonia to nitrite |
(C) | Thiobacillus | (III) | Conversion of nitrite to nitrate |
(D) | Nitrobacter | (IV) | Conversion of atmospheric nitrogen to ammonia |
Options: | (A) | (B) | (C) | (D) |
1. | III | I | IV | II |
2. | IV | III | II | I |
3. | II | IV | I | III |
4. | I | II | III | IV |
Match Column-I with Column- II.
Column I | Column II | ||
(a) | Nitrococcus | (i) | Denitrification |
(b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
(c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
(d) | Nitrobactèr | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | iii | i | iv | ii |
2. | iv | iii | ii | i |
3. | ii | iv | i | iii |
4. | i | ii | iii | iv |
Which of the following bacteria reduce nitrate in soil into nitrogen?
1. Nitrobacter
2. Thiobacillus
3. Nitrococcus
4. Nitrosomonas
Select the mismatch:
Column I | Column II | |
1. | Rhodospirillum | Mycorrhiza |
2. | Anabaena | Nitrogen fixer |
3. | Rhizobium | Alfalfa |
4. | Frankia | Alnus |
1. convert free nitrogen to nitrogen compounds
2. convert proteins into ammonia
3. reduce nitrates to free nitrogen
4. oxidize ammonia to nitrates
The free-living, anaerobic nitrogen-fixer is:
1. Beijerinckia
2. Rhodospirillum
3. Rhizobium
4. Azotobacter
Study the cycle shown below and select the option which gives the correct words for all four blanks A, B, C, and D:
Options:
A | B | C | D | |
1. | Denitrification | Ammonification | Plants | Animals |
2. | Nitrification | Denitrification | Animals | Plants |
3. | Denitrification | Nitrification | Plants | Animals |
4. | Nitrification | Ammonification | Animals | Plants |
Which of the following is a symbiotic nitrogen fixer?
1. Glomus
2. Azotobacter
3. Frankia
4. Azolla