Environmental Studies · Biology

Pesticides and Pest Control

1,236 Questions

Pesticides and Pest Control focuses on the management of invasive species through chemical, biological, and cultural methods. It includes topics like integrated pest management, herbicide targets, and the ecological impacts of toxic chemicals. This subject is frequently tested in environmental science and agriculture exams.

Integrated Pest ManagementBiological Control AgentsHerbicide MechanismsChemical Pesticide ToxicityGenetic Pest ResistanceInvasive Species Management

Pesticides and Pest Control Questions

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Which of the following statements is correct with regard to biocontrol agents ?

  1. Ladybird and dragonflies are used to get rid of aphids and mosquitoes respectively.

  2. Bacillus thuringiensis bacteria are used to control butterfly caterpillars.

  3. Trichoderma species are used to control several plant pathogen.

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Ladybird and dragonflies are used to get rid of aphids and mosquitoes respectively. Bacillus thuringiensis bacteria are used to control butterfly caterpillars. Trichoderma species are used to control several plant pathogen.. 
So, the correct option is 'All of these'
Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Statement 1 : Biocontrol refers to the use of biological methods for controlling plant diseases and pests.
Statement 2 : Use of biocontrol measures will greatly reduce our dependence on toxic chemicals and pesticides.

  1. Both statements 1 and 2 are correct.

  2. Statement 1 is correct but statement 2 is incorrect.

  3. Statement 1 is incorrect but statement 2 is correct.

  4. Both statements 1 and 2 are incorrect.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Biocontrol refers to the use of biological methods for controlling plant diseases and pests. Use of biocontrol measures will greatly reduce our dependence on toxic chemicals and pesticides.
So, the correct option is 'Both statements 1 and 2 are correct'
Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

The bacterium Bacillus thuringiensis is widely used in contemporary biology as

  1. Source of industrial enzyme

  2. Indicator of water pollution

  3. Insecticide

  4. Agent for production of dairy products
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bacillus thuringiensis (Bt) produces toxins that are lethal to specific insect larvae, making it a common biological insecticide.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

The plant pesticide pyrethrum is obtained from

  1. Cinchona officinalis

  2. Chrysanthemum cinerariifolium

  3. Chrysophyllum cainito

  4. Cannabis sativa

  5. Cicer arietinum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pyrethrum is a genus of plants which are cultivated as ornamentals. It is a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium. Pyrethroids are synthetic insecticides derived from natural Pyrethrum (pyrethrins). The compound enhances the effect of toxicity to insects. These compounds target the nervous system of the insects. They are commonly used as insect repellants. 

Thus, the correct answer is option B. 

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Integrated pest management (IPM) is also known as 

  1. Integrated parasite control

  2. Integrated pests control

  3. Integrated pests cure

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Integrated pests management is a method which uses the natural agents like the microbes and insects to control the population of other harmful pests and insects. Thus, it is an integrated method for the control of the pests, insects, harmful disease causing agents, etc. The different methods to control pests are physical, biological, chemical, mechanical and cultural. 

Thus, the correct answer is option B. 

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Which of the following is a physical method of integrated pests management?

  1. Humidity

  2. Cold

  3. Conservation of native enemy population

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Integrated pests management is a method which uses the natural agents like the microbes and insects to control the population of other harmful pests and insects. The different methods to control pests are physical, biological, chemical, mechanical and cultural. The physical method involves controlling physical parameters like cold, high temperature, humidity, light, etc. Manipulation of these parameters help in controlling pests.

Thus, the correct answer is option D. 

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

The regulated use of synthetic pesticides at specific times in a pest's life cycle is evaluated under which of the following stage of IPM?

  1. Monitoring

  2. Responsible use

  3. Preventive cultural practices

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

Preventive cultural practices in IPM involve managing the environment to make it less favorable for pests, which includes timing activities to disrupt the pest life cycle.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

The practices like hand-picking, barriers, traps, vacuuming and tillage to disrupt breeding is considered under

  1. Mechanical control

  2. Biological control

  3. Responsible use

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Integrated pests management is a method which uses the natural agents like the microbes and insects to control the population of other harmful pests and insects. Mechanical control is applied when the pests reach an unacceptable level. This method includes techniques like bagging fruit, sieves, hand-picking, barriers, traps, vacuuming and tillage to disrupt breeding. 

Thus, the correct answer is option A.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

How many basic set of principles are included in integrated pests management?

  1. Five

  2. Four

  3. Twenty

  4. Eight
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eight basic principles are included in integrated pest management.

  • Achieving prevention and suppression of harmful organisms.
  • Monitoring of harmful organisms.
  • Decisions made based on monitoring and thresholds.
  • Non-chemical methods.
  • Pesticide Selection.
  • Reduced Use of Pesticides.
  • Anti-resistance strategies.
  • Evaluation.
So, the correct answer is option D.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

Plant and animal quarantines are included in

  1. Regulatory methods

  2. Chemical methods

  3. Cultural methods

  4. Monitoring method
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Integrated pests management is a method which uses the natural agents like the microbes and insects to control the population of other harmful pests and insects. Different methods are used for the control of the pests. When the plant and the animals are affected by the pests or disease, they are shifted to a place and quarantined to prevent the other plants and animals from getting affected. These are considered under the regulatory methods. 

Thus, the correct answer is option A.