Tag: microbes and farming

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Questions Related to microbes and farming

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Find out the pairs which are correctly matched.

a Cyanobacteria $1$ Biopesticide
b Mycorrhiza $2$ Solubilisation of phosphate
c Bacillus thuringiensis $3$ Cry protein
d Single cell protein $4$ Rhizobia
  1. A and $2$
  2. B and $3$
  3. C and $3$
  4. A and $3$
  5. B and $4$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bacillus thuringiensis have Bt toxin encoded by cry genes forming cry proteins.

 Correct answer-C

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Trichoderma harzianum is useful for.

  1. Gene transfer in higher plants

  2. Biological control of soil borne pathogens/ biopesticide

  3. Bioremediation of contaminated soils

  4. Reclamation of waste land
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The fungus Trichoderma species are free-living fungi that are very common in root ecosystems and are effective biocontrol agents of several plant pathogens.

Correct answer-B

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

A biodegradable insecticide has been obtained from.

  1. Sunflower

  2. Sweet Clover

  3. Marigold

  4. Opuntia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer is option C i.e. "Marigold"
Biodegradable insecticides are types of insecticides derived from natural materials as plants, bacteria, etc. Bioinsecticide from marigold flowers contains chemicals called thiophenes which are toxic to the larvae of mosquitoes that carry malaria and yellow fever. Bioinsecticide made from marigold also contains repellent against major tomato pests: whiteflies, thrips, and spider mites.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Which of these methods is not a part of environmental pest control?

  1. Intercropping

  2. Introducing predators or parasites

  3. Plant trap crops

  4. Sterile male technique
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Environmental pest control (or ecological control) involves methods like intercropping, trap crops, and biological control agents (predators/parasites). The sterile male technique is considered a genetic or autocidal control method, not an environmental one.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

The majority of Baculoviruses are used as biological control agents as.

  1. They are species - specific

  2. They have no negative impact on nontargets

  3. Beneficial insects are being conserved

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Baculoviruses are used as biological control agents and in intrinsic farming because of all these above characteristics.

Correct answer-D