Biocontrol agents and biofertilizers
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See all →- Which of following organisms cannot fix nitrogen?A. AzotobacterB. OscillatoriaC. AnabaenaD. VolvoxE. NostocChoose the correct answer from the options given below: Answer: 2. D only Key idea: Volvox is a green alga and cannot fix nitrogen. Azotobacter (free-living bacterium) and Oscillatoria, Anabaena,... 1
- Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called : Answer: 4. Bio-fortification Key idea: Breeding crops for higher vitamins, minerals, proteins and healthier fats is called biofortification.... 1
- Which one of the following produces nitrogen fixing nodules on the roots of Alnus ? Answer: 3. Frankia Frankia is the actinomycete that forms nitrogen-fixing root nodules in non-leguminous plants such as Alnus. Rhizobium nod... 1
- Which of the following is not an objective of Biofortification in crops ? Answer: 2. Improve resistance to diseases Biofortification breeds crops for higher nutritional quality: more protein, vitamins, minerals and... 1
- Match List - I with List - II.List - I | List - II(a) Protoplast fusion | (i) Totipotency(b) Plant tissue culture | (ii) Pomato(c) Meristem culture | (iii) Somaclones(d) Micropropagation | (iv) Virus free plantsChoose the correct answer from the opti… Answer: 2. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) Match each technique with its outcome: Protoplast fusion gives somatic hybrids such as pom... 1
- The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are : Answer: 4. Ammonia and hydrogen Key idea: Nitrogenase reduces nitrogen to ammonia and releases hydrogen. The reaction is N₂ + 8e^- + 8H^+ +... 1