Mycorrhiza does not help the host plant in

1. enhancing its phosphorus uptake capacity

2. increasing its tolerance to drought

3. enhancing its resistance to root pathogens

4. increasing its resistance to insects

Subtopic:  Microbes as Biofertilizer |
 76%
Level 2: 60%+
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Which one of the following is not a nitrogen-fixing organism?

1. Anabaena

2. Nostoc

3. Azotobacter

4. Pseudomonas

Subtopic:  Microbes as Biofertilizer |
 92%
Level 1: 80%+
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Match the items in column "A' and coloum 'B' and choose the correct answer 

Column I Column II
A. Lady bird  (i) Methano bacterium 
B. Mycorrhiza  (ii) Trichoderma 
C. Biological control (iii) Aphids
D. Biogas (iv) Glomus 

The correct answer is 

A B C D
(1)  ii  iv   iii   i
(2)  iii   iv  ii  i
(3)  iv  i  ii  iii 
(4)  iii  ii  i  iv
Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules | Microbes in Production of Biogas | Microbes in Biocontrol Agent | Microbes as Biofertilizer |
 92%
Level 1: 80%+
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