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Questions on Biofertilizers | Medicinal Plants, Paper - 04 |
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Sr. No. |
Questions |
Answers |
1. |
If wheat field is inoculated with Rhizobium
(a) Soil will become nitrogen rich
(b) No effect on soil nitrogen
(c) Soil will be depleted of nitrogen
(d) Soil will become rich in calcium
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Answer: (b) |
2. |
In mushroom cultivation, Spawn is
(a) Compost
(b) Button stage
(c) Vegetative mycelium
(d) Harvested mushroom
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Answer: (c) |
3. |
Insect deterrent chemical extracted from neem (margosa) is
(a) Thiocarbamate
(b) Pyrethroid
(c) Azadirachtin
(d) Allethrin
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Answer: (c) |
4. |
Insecticide azadirachtin is got from
(a) Mango
(b) Neem
(c) Tulsi
(d) Shoe flower
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Answer: (b) |
5. |
Leaves of plant used as biofertilizer belong to
(a) Hibiscus
(b) Mango
(c) Anabeana
(d) Azolla
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Answer: (d) |
6. |
Leghaemoglobin is found in
(a) Root nodules of legumes
(b) Mycorrhiza
(c) coralloid roots
(d) Cyanobacteria
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Answer: (a) |
7. |
Leghaemoglobin occurs in
(a) Coralloid root
(b) BGA
(c) Around bacteriods
(d) Mycorrhiza
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Answer: (c) |
8. |
Leghaemoglobin takes part in
(a) Energy release
(b) Stimulating growth of Rhizobium
(c) N2 absorption
(d) Protecting nitrogenase
(e) Supply of oxygen
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Answer: (d) |
9. |
Leguminous plants are able to fix atmospheric nitrogen through symbiotic process. Which is not true about it?
(a) Leghaemoglobin scavenges oxygen and is pinkish in colour
(b) Nitrogenase is insensitive to Oxygen
(c) Nodules act as site for nitrogen fixation
(d) Enzyme nitrogenase catalyses conversion at atmospheric nitrogen to NH3
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Answer: (b) |
10. |
Main sources of biofertilizers are
(a) Bacteria
(b) Cyanobacteria
(c) Fungi
(d) All the above
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Answer: (d) |