- 1(current)
Q. No.Select the mismatch:
| Column I | Column II | |
| 1. | Rhodospirillum | Mycorrhiza |
| 2. | Anabaena | Nitrogen fixer |
| 3. | Rhizobium | Alfalfa |
| 4. | Frankia | Alnus |
Select the mismatch.
(1) Frankia Alnus
(2) Rhodospirillium Mycorrhiza
(3) Anabaena Nitrogen fixer
(4) Rhizobium Alfa-fa
| List-I | List-II | ||
| A. | Nitrification | I. | Azotobacter |
| B. | Denitrification | II. | Nitrotobacter |
| C. | Free-living nitrogen fixation | III. | Rhizobium |
| D. | Symbiotic nitrogen fixation | IV. | Pseudomonas |
Choose the correct answer from the options given below:
1. A -III, B - IV, C-II, D - I
2. A -II, B - I, C-IV, D - III
3. A -II , B - IV, C-I, D - III
4. A -IV , B - II , C-III, D - I
Read the following four statements (I-IV):
| I. | Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane |
| II. | In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth |
| III. | Stamens in flowers of Gloriosa and Petunia are polyandrous |
| IV. | Symbiotic nitrogen-fixers occur in a free-living state and also in soil |
How many of the above statements are right?
1. Three
2. Four
3. One
4. Two
A : The +-- fixing bacteria become anaerobic during fixing events.
R : The enzyme nitrogenase is highly sensitive to the molecular oxygen.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark(1).
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
3. If Assertion is true statement but reason is false, then mark (3).
4. If both Assertion and Reason are false statements, then mark (4).
Reason(R): These amino acids have more nitrogen than amides.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
- 1(current)
Q. No.
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