Biological Control Methods Quiz

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Questions and Answers

What is a key advantage of biological control in crop protection?

High risk of resistance formation

Increase in pesticide residues on plants

High toxicity to non-target species

Conservation of beneficial organisms (correct)

Which Baculovirus classification is associated with controlling Hymenoptera?

Beta-: GV, Lepidotera

Delta-: NPV, Diptera

Alpha-: NPV, Lepidotera

Gamma-: NPV, Hymenoptera (correct)

What is one reason consumers are taking an increasingly critical look at the use of microorganisms in crop protection?

High risk of pesticide residues on plants

Concerns about environmental impact and safety (correct)

High toxicity to non-target species

Low efficacy of biological control methods

Which trait by genetic modification is mentioned as possibly improving root colonizing ability and resistance to environmental factors?

Enhancing root colonizing ability Signup and view all the answers

What does the registration of microbials, like metabolites and exotic strains, remain critical for in crop protection?

Maintaining efficacy and regulatory standards Signup and view all the answers

What is the definition of 'biocontrol' according to the text?

The use of living organisms to suppress the population density or impact of a specific pest organism, making it less abundant or less damaging than it would otherwise be. Signup and view all the answers

Which of the following is considered an 'active substance' under this regulation?

Micro-organisms having general or specific action against harmful organisms or on plants. Signup and view all the answers

What is an example of a 'beneficials, microorganisms/virus' in the context of biocontrol?

Bacillus thuringiensis, a bacterium that is toxic to certain insects. Signup and view all the answers

Which of the following is an example of a biocontrol agent's mode of action?

Oral uptake of a Bacillus thuringiensis toxin by insects. Signup and view all the answers

What is an example of the 'microbiology/biotechnology' aspect of biocontrol agents?

The propagation of Cydia pomonella granulovirus (CpGV) in C.pomonella larvae. Signup and view all the answers

Which of the following factors is not mentioned in the text as influencing the development and use of biocontrol agents?

The specific application technology used to apply the biocontrol agent. Signup and view all the answers

What is the difference between classical biological control and inoculation biological control?

Classical biological control involves the introduction of a new beneficial species, while inoculation biological control involves the release of living organisms to control pests temporarily. Signup and view all the answers

What is the primary goal of conservation biological control?

To modify the environment to enhance natural enemies and reduce pest effects. Signup and view all the answers

What distinguishes inoculation biological control from inundation biological control?

Inoculation biological control aims for permanent pest control, while inundation biological control is only temporary. Signup and view all the answers

Which method exclusively relies on living organisms to control pests?

Inundation biological control Signup and view all the answers

What is the main purpose of classical biological control?

To permanently establish exotic beneficial species for pest control. Signup and view all the answers

How does conservation biological control differ from inoculation biological control in terms of sustainability?

Conservation biological control enhances natural enemies for extended periods without permanent establishment, while inoculation biological control expects temporary multiplication for long-term pest management. Signup and view all the answers

Study Notes

Advantages of Biological Control

Biological control acts as a sustainable alternative to chemical pesticides, minimizing environmental impact.
Key advantage includes the potential for long-term pest management through the natural regulation of pest populations.

Baculovirus Classification

Baculovirus that targets Hymenoptera falls under the genus Baculovirus, utilized for pest control in specific insect orders.

Consumer Perspectives on Microorganisms

Increasing consumer scrutiny is driven by concerns over synthetic chemicals and the desire for organic and environmentally friendly agricultural practices.

Genetic Modification Traits

Genetic modification aimed at enhancing root colonizing ability and environmental resistance includes traits derived from Plant Growth-Promoting Rhizobacteria (PGPR).

Registration of Microbials

Registration of microbials, including metabolites and exotic strains, is critical to ensure safety, efficacy, and regulatory compliance in crop protection strategies.

Definition of Biocontrol

Biocontrol is defined as the use of natural organisms or substances to manage pest populations, promoting ecological balance.

Active Substances Regulation

Active substances in crop protection regulations refer to any intentional ingredient used to control pests, including specific microorganisms and their derivatives.

Beneficial Microorganisms/Viruses

An example of beneficial microorganisms in biocontrol is Bacillus thuringiensis, which produces toxins harmful to certain insects.

Mode of Action of Biocontrol Agents

An example includes competition for resources, where biocontrol agents outcompete pest organisms for nutrients and habitat.

Microbiology/Biotechnology Aspect

The application of genetic engineering techniques to enhance the efficacy or survival of biocontrol agents exemplifies the microbiology/biotechnology aspect.

Development Factors of Biocontrol Agents

Factors influencing development and use do not include solely political considerations; economic, ecological, and technological aspects are also critical.

Classical vs. Inoculation Biological Control

Classical biological control involves introducing natural enemies to a new environment, while inoculation biological control refers to the intentional release of biocontrol agents to manage pests.

Goal of Conservation Biological Control

The primary goal is to enhance existing natural enemy populations and their effectiveness in controlling pest species without disruptive interventions.

Distinctions in Biological Control Methods

Inoculation biological control releases specific organisms to target pests, while inundation biological control applies large quantities of biocontrol agents for immediate pest suppression.

Living Organism Dependency

The method that exclusively relies on living organisms to manage pests is categorized as biological control.

Purpose of Classical Biological Control

The main purpose is to establish a self-sustaining population of natural enemies that will continue to control pest populations over time.

Sustainability in Biological Control

Conservation biological control emphasizes maintaining ecological balance and promoting resilient pest control systems compared to the more interventionist strategy of inoculation biological control.

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Description

Test your knowledge on different methods of biological control including classical biological control, conservation biological control, and the use of beneficials, microorganisms, viruses, and semiochemicals. Explore how these methods help protect and enhance natural enemies to reduce the impact of pests.