Which of the following elements helps in maintaining the structure of ribosomes?
1. Magnesium
2. Zinc
3. Copper
4. Molybdenum
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:
1. Ammonia
2. Glutamate
3. Nitrates
4. Ureides
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 |
Match the following concerning essential elements and their functions in plants:
Column I | Column II | ||
(a) | Iron | (i) | Photolysis of water |
(b) | Zinc | (ii) | Pollen germination |
(c) | Boron | (iii) | Required for chlorophyll biosynthesis |
(d) | Manganese | (iv) | IAA biosynthesis |
(a) | (b) | (c) | (d) | |
1. | (iv) | (iii) | (ii) | (i) |
2. | (iii) | (iv) | (ii) | (i) |
3. | (iv) | (i) | (ii) | (iii) |
4. | (ii) | (i) | (iv) | (iii) |
The product(s) of the reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are.
1. Nitrate alone
2. Ammonia and oxygen
3. Ammonia and hydrogen
4. Ammonia alone
List I | List II | ||
(a) | Manganese | (i) | Activates the enzyme catalase |
(b) | Magnesium | (ii) | Required for pollen germination |
(c) | Boron | (iii) | Activates enzymes of respiration |
(d) | Iron | (iv) | Functions in splitting of water during photosynthesis |
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (ii) | (iv) |
2. | (iii) | (iv) | (i) | (ii) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (i) | (ii) | (iii) |
Which one of the following process is responsible for the release of \(N_2\) in the atmosphere?
1. Industrial Nitrogen fixation
2. Ammonification
3. Denitrification
4. Biological nitrogen fixation
Which of the following pair of micronutrients would help in the light phase of photosynthesis to help in the reaction leading to oxygen evolution?
1. Zinc and Chlorine
2. Manganese and Molybdenum
3. Molybdenum and Iron
4. Manganese and Chlorine
List-I | List-II | ||
(a) | Porins | (i) | Pink coloured nodules |
(b) | leg haemoglobin | (ii) | Lumen of thylakoid |
(c) | H+ accumulation | (iii) | Amphibolic pathway |
(d) | Respiration | (iv) | Huge pores in outer membrane of mitochondria |
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iv) | (iii) |
2. | (iv) | (i) | (ii) | (iii) |
3. | (iii) | (iv) | (ii) | (i) |
4. | (ii) | (iv) | (i) | (iii) |