Insect Physiology and Ecology Quiz
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Questions and Answers

What is the term used for the temperature at which the growth of poikilothermic animals is arrested?

  • Developmental zero (correct)
  • Maximum effective temperature
  • Thermal constant
  • Temperature preferendum
  • What characterizes the zones of inactivity for insects?

  • Inactivity due to maximum temperatures
  • High metabolic rate maintenance
  • Inactivity due to freezing
  • Alive but no development occurs (correct)
  • Which of the following represents the fatal high temperature for insects?

  • 35 to 50°C
  • -5 to -14°C
  • 50 to 60°C (correct)
  • 0 to 35°C
  • How does death occur in insects at fatal high temperatures?

    <p>Accumulation of toxins</p> Signup and view all the answers

    What is the preferred temperature range called for insects when given a choice along a temperature gradient?

    <p>Temperature preferendum</p> Signup and view all the answers

    What does the thermal constant refer to in the insect development cycle?

    <p>Total heat energy for development</p> Signup and view all the answers

    What happens to insect fecundity at extreme temperatures?

    <p>Declines at both upper and lower limits</p> Signup and view all the answers

    Which condition favors the establishment and distribution of insects?

    <p>Tropical and subtropical conditions</p> Signup and view all the answers

    What term describes a relationship where both organisms benefit from the interaction?

    <p>Mutualism</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a predator?

    <p>Consumes plant matter</p> Signup and view all the answers

    What term is used to describe an organism that obtains nourishment at the expense of its host?

    <p>Parasite</p> Signup and view all the answers

    What is the primary difference between a parasite and a parasitoid?

    <p>Parasitoids live freely as adults.</p> Signup and view all the answers

    What are the two major categories of pest control methods?

    <p>Natural and applied</p> Signup and view all the answers

    Which group of parasites specifically attacks plants?

    <p>Phytophagous</p> Signup and view all the answers

    What type of control measures are taken to prevent the occurrence or spread of infestation?

    <p>Preventive measures</p> Signup and view all the answers

    What phenomenon describes the process of a parasite obtaining nourishment from its host?

    <p>Parasitisation</p> Signup and view all the answers

    Which method is considered the cheapest among pest control strategies?

    <p>Cultural methods</p> Signup and view all the answers

    What defines the prey in the predator-prey relationship?

    <p>The organism that is hunted</p> Signup and view all the answers

    What practice involves the removal of weeds to prevent pests?

    <p>Clean cultivation</p> Signup and view all the answers

    Which of the following is NOT a category of cultural methods?

    <p>Legislative methods</p> Signup and view all the answers

    How does the population of a species typically behave over time?

    <p>Oscillates around a theoretical optimum</p> Signup and view all the answers

    What is the effect of proper preparatory cultivation on insect populations?

    <p>It exposes insects to sun and natural predators.</p> Signup and view all the answers

    Which of the following correctly defines curative measures?

    <p>Methods aimed at killing existing pest populations</p> Signup and view all the answers

    What benefit do farmers gain by adopting normal agricultural practices?

    <p>Improved crop yields and pest population control</p> Signup and view all the answers

    What does the term 'Normal Coefficient of destruction' refer to?

    <p>The proportion of a population eliminated due to environmental resistance</p> Signup and view all the answers

    Which factors are considered constituents of environmental resistance?

    <p>Both biotic and abiotic factors</p> Signup and view all the answers

    How is environmental resistance expected to affect insect populations?

    <p>It maintains dynamic equilibrium within the population</p> Signup and view all the answers

    What can lead to the outbreak of pest populations in agro-ecosystems?

    <p>Intensification of agriculture under favorable conditions</p> Signup and view all the answers

    Which abiotic factors are known to adversely affect insects at extreme levels?

    <p>Temperature and humidity</p> Signup and view all the answers

    What is implied by the formula for calculating the Normal Coefficient of destruction?

    <p>The sex ratio influences the population dynamics significantly</p> Signup and view all the answers

    What role do natural disturbances play in insect life?

    <p>They generally act as limiting factors for insect survival</p> Signup and view all the answers

    Which statement describes the relationship between biotic potential and environmental resistance?

    <p>They create a dynamic equilibrium in populations</p> Signup and view all the answers

    What characterizes an epidemic pest?

    <p>Is present in a severe form only during a particular season</p> Signup and view all the answers

    Which of the following is an example of an endemic pest?

    <p>Stem borers of rice</p> Signup and view all the answers

    What is a key component of Integrated Pest Management (IPM)?

    <p>Harmonious use of multiple control methods</p> Signup and view all the answers

    What does the term 'economic injury level' refer to in pest management?

    <p>The maximum pest population that can be tolerated without economic loss</p> Signup and view all the answers

    At what temperature do mosquitoes become rare?

    <p>112°F</p> Signup and view all the answers

    What is the reason for the pink boll worm being serious in Punjab?

    <p>Temperature within 95.5°F</p> Signup and view all the answers

    Who first proposed the concept of managing pest populations in 1961?

    <p>Geier and Clark</p> Signup and view all the answers

    What behavior do insects exhibit when facing unfavorable temperatures?

    <p>They move away</p> Signup and view all the answers

    What does the 'P' in the IPM acronym stand for?

    <p>Pest management</p> Signup and view all the answers

    According to the content, which statement is true regarding the role of total agro ecosystem in pest management?

    <p>It broadly influences insect numbers for pest management</p> Signup and view all the answers

    Which organism migrates at temperatures between 17 to 22°C?

    <p>Desert locust</p> Signup and view all the answers

    In the context of IPM, why is it important to maintain pest populations below economically damaging levels?

    <p>To ensure higher agricultural yield without economic loss</p> Signup and view all the answers

    How do desert insects typically manage their body color to deal with heat?

    <p>They develop dark pigments</p> Signup and view all the answers

    What adaptation helps conserve moisture by preventing excessive evaporation?

    <p>Dense body hairs</p> Signup and view all the answers

    What is a characteristic feature of some desert beetles that aids in protecting them from hot winds?

    <p>Oval and compressed body</p> Signup and view all the answers

    What anatomical feature aids insects in retaining body moisture?

    <p>Waxy coating of integument</p> Signup and view all the answers

    Study Notes

    Study Notes

    • Study Material: Insect Ecology and Integrated Pest Management for Acharya N G Ranga Agricultural University, Course No. Ento.231 (2+1), (2011-12)

    Editors and Co-Editors

    • Editors: G Raghavaiah (Professor & Head, Department of Entomology, Agricultural College, Bapatla) and T Ramesh Babu (Professor & Head, Department of Entomology, College of Agriculture, Rajendranagar, Hyderabad)
    • Co-Editors: K Hari Prasad, S R Koteswara Rao, P V Krishnayya, K Manjula, P Seetha Ramu, K Sridevi and S Upendhar

    Objectives

    • General Objective: To impart knowledge of insect ecology and various pest management strategies.
    • Specific Objectives (Theory):
    • Understanding ecological factors influencing insect development and distribution.
    • Knowledge of integrated pest management (IPM) components.
    • Understanding insecticide classification and use in pest management.
    • Knowledge of mass multiplication techniques for major bio-control agents.
    • Knowledge of non-insect pest management.
    • Specific Objectives (Practical):
    • Knowledge of sampling techniques for estimating insect populations.
    • Knowledge of light traps, pheromone traps and insecticides in pest management.
    • Identifying biological control agents.
    • Knowledge of insecticide formulations and dosage calculation.
    • Knowledge of mass multiplication of bio-control agents.
    • Identifying nematodes, mites and other non insect pests.

    Lecture Outlines (Theory)

    • Lecture 1 (ecology): Introduction, autecology, synecology, population, community, environment.
    • Lecture 2 (abiotic factors): Temperature, moisture, rainfall, light - their effect on insect development, fecundity, distribution, and movement.
    • Lecture 3 (light): Ecology of light; impact on growth, moulting, activity, oviposition and pigmentation.
    • Lecture 4 (pest surveillance): Importance of IPM. The evolution of IPM, concepts and principles.
    • Lecture 5 (pest surveillance): Pest surveillance, forecasting and marking endemic areas, population dynamics, and key mortality factors.
    • Lecture 6 (IPM): Modern concept of Integrated Pest Management (IPM), advantages and disadvantages.
    • Lecture 7 (Host Plant Resistance): Host plant resistance, ecological resistance, host evasion, induced resistance and host escape
    • Lecture 8 (Cultural Methods of Pest Control): Normal agricultural practices, adjusting planting times, trap cropping.
    • Lecture 9 (Physical Methods of Pest Control): Strategies for controlling pests like use of heat, steam sterilization, and other physical measures.
    • Lecture 10 (Biological Control): Introduction, types of biological control (introduction, augmentation, conservation), advantages and disadvantages.
    • Lecture 11 (Microbial Control): Role of bacteria, viruses, fungi and nematodes in controlling pests, advantages and disadvantages.
    • Lecture 12 (Beneficial Insects): Pollinators, their importance and characteristics of different genera of pollinators and scavengers, advantages and disadvantages
    • Lecture 13 (Chemical Control): General properties and classification of insecticides.
    • Lecture 14 (Inorganic Insecticides): Arsenic compounds and their use, safety precautions.
    • Lecture 15 (Synthetic Organic Insecticides): Chlorinated hydrocarbons (DDT and HCH), Cyclodienes and their classification.
    • Lecture 16 (Synthetic Pyrethroids and insecticides of other groups): Types of synthetic pyrethroids, their properties, and methods of control.
    • Lecture 17 (Macrocyclic Lactones): Spinosad and Avermectins.
    • Lecture 18 (Chitin synthesis inhibitors, Insect hormone mimics, agonists and recent methods of pest control): Methods, properties, and advantages of various chemicals.
    • Lecture 19 (Rodenticides And Acaricides): Compounds used to control rodents, their characteristics, properties, types, and safety precautions with respect to use and mixing with other compounds.
    • Lecture 20 (Application Techniques of Spray Fluids): Different types of sprays, their properties, advantages, and disadvantages.
    • Lecture 21 (History of nematology, economic importance in Agriculture-Classification of Nematihelmenthes) : History of nematology and importance in agriculture.
    • Lecture 22 (Functional Systems of Nematodes): Different types of nematodes and the morphology and classification using these factors.
    • Lecture 23 (Nematode Biology and Ecology - Types and Complex Diseases): Nematode biology and ecology, parasitism, complex diseases related to nematodes.
    • Lecture 24 (Different types of nematodes): Various types of nematodes and their damage to crops, symptoms of infestation and treatment.
    • Lecture 25 (Integrated Nematode Management): Host plant resistance, cultural practices, mechanical methods
    • Lecture 26 (Different Nematode Management Methods): Physical biological and chemical control.
    • Lecture 27 (Mites): Mites – morphological aspects, importance of mites, and vectors of crop diseases
    • Lecture 28 (Types of Mites): Important mites and their classifications and properties
    • Lecture 29 (Tarsonemidae and Eriophyidae): Classification of families of mites.
    • Lecture 30 (House Hold Insects - Rodents): Classification of Rodentia, characteristics of Indian rodents, their damage to crops. Management and chemical control.
    • Lecture 31 (Other Non Insect Pests - Birds): Bird species that harm crops, their destructive nature. Methods of controlling birds that harm crops.
    • Lecture 32 (Other Domestic Insect Pests - Insects): List and classification of household and livestock pests and how to control these pests.

    Practical Information

    • Practical exercises to be performed as part of the course.

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    Description

    Test your knowledge on the physiological and ecological aspects of insects in this quiz. Explore topics such as temperature effects on growth, insect-favorable conditions, and interactions between species. Sharpen your understanding of critical concepts like thermal constants and pest control methods.

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