Q. No.Biocontrol measures will greatly reduce our dependence
(1) On toxic chemicals
(2) On pests
(3) On insects
(4) On Birds
(1) On toxic chemicals
(2) On pests
(3) On insects
(4) On Birds
Which of the following is not an important part of biological farming approach?
| 1. | To know all the life forms that inhabit the field |
| 2. | Predators and pests are also analysed |
| 3. | The life cycles, patterns of feeding and habitats of all the life forms of that field are analysed |
| 4. | To know the abundance of each of the life forms |
Which of the following is the major concern of Organic farmers?
(1) Chemical methods lead to death of harmful life forms discriminately
(2) Eradication of pest is undesirable as it may lead to death of beneficial predatory and parasitic insects
(3) Conventional farming
(4) Biocontrol measures will increase the dependence on toxic chemicals.
To get rid of Aphids which of the following is used?
(1) Beetle with red and black markings
(2) Ladybird
(3) Dragonflies
(4) Both A and B
To get rid of mosquitoes, which of the following is used?
(1) Dragonflies
(2) Aphids
(3) Ladybird
(4) Both B and C
The Bacterium Bacillus thuringiensis is used to
(1) Control aphids
(2) Control aphid larva
(3) To control butterfly
(4) To control butterfly caterpillars
Bt as a Biocontrol measure holds true for which of the following options?
1. Available in sachets as dried spores
2. Sprayed on vulnerable plants such as Brassicas and Dahlia
3. Kills butterfly caterpillars and other insects
4. All of these
Which of the following is not true about Trichoderma?
(1) Common in the root ecosystem
(2) Free living fungi
(3) Effective Biocontrol Agents of several plant pathogens
(4) Bt-cotton is prepared by it
Which of the following option is not true for Baculoviruses?
(1) Pathogens that attack insects and the Arthropods
(2) Biological control agents
(3) Genus- Nucleopolyhedrovirus
(4) Species-specific and broad spectrum insecticidal applications
Baculoviruses have no negative effect over
1. Plants, fish
2. Mammals
3. Birds, non-target insects
4. All of the above
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