All Free Agriculture MCQs with Answers
Every Agriculture question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
2,315 questions · page 90 of 116
- A. PyerthoridsSearch Public Records
- B. Carbamates
- C. Organoctilorine pesticide
- D. Organophosphrous pesticides
Explanation: Methamidophos and monocrotophos inhibit acetylcholinesterase and belong to the organophosphate group.
Correct answer: Organophosphrous pesticides1782. The pesticide are derived from naturally occuring element with out carbon is called________________?
- A. Inorganic pesticide
- B. Organic pesticide
- C. Fumigants
- D. Natural pesticide
Explanation: Inorganic pesticides are derived from mineral or other non-carbon-based elements and compounds, such as sulfur and certain metal salts.
Correct answer: Inorganic pesticide- A. Avicide
- B. Ovicide
- C. Pesticide
- D. Fungicide
Explanation: An ovicide is designed to kill insect eggs, with the term derived from ovum, meaning egg.
Correct answer: Ovicide1784. The ingredient of pesticide formulation responsible for toxic effect is called_________________?
- A. Dose
- B. Insert ingredient
- C. Active ingredient
- D. Pesticide
Explanation: The active ingredient is the chemically active component responsible for the pesticide's toxic or controlling effect.
Correct answer: Active ingredient- A. Polyhagous parasites
- B. oligophagous parasites
- C. Facultative parasites
- D. Transitory parasites
Explanation: A polyphagous parasite or parasitoid can use many different host species, whereas an oligophagous one is restricted to a smaller group of…
Correct answer: Polyhagous parasites- A. Sugarcane top borer
- B. Sugarcane stem borer
- C. Sugarcane root borer
- D. Sugarcane black borer
Explanation: Cotesia flavipes, also written in some sources as Cotesia flavipes rather than flavipers, is an endolarval parasitoid used against…
Correct answer: Sugarcane stem borer- A. Ichneumon, Fleas
- B. Trichograma sp, Horse flie
- C. All of above
- D. Cotesia sp
Explanation: Ichneumonids, Trichogramma and Cotesia are parasitoids, while fleas and horse flies are parasitic or blood-feeding insects.
Correct answer: All of above- A. None of the AboveHire Grant Writers
- B. Phytophagous parasites
- C. Heteroxenous parasites
- D. Hyperparasites
Explanation: A hyperparasite is a parasite that attacks another parasite, so its host is itself parasitic.
Correct answer: Hyperparasites1789. The parasite which requires only one host for its complete life cycle is called________________?
- A. Entomophagous parasites
- B. Zoophagous parasites
- C. Phytophagous parasites
- D. Monoxenous parasites
Explanation: A monoxenous parasite completes its entire life cycle in or on a single host species.
Correct answer: Monoxenous parasites- A. Entomophagous parasites
- B. Zoophagous parasites
- C. Phytophagous parasites
- D. None of the AboveSearch Public Records
Explanation: Entomophagous insects attack and feed on other insects, making them useful biological-control agents.
Correct answer: Entomophagous parasites- A. Apanteles sp
- B. Trichogramma sp
- C. water joint beetle
- D. Ichneumon
Explanation: Trichogramma species are minute wasps that parasitize the eggs of many lepidopterous pests.
Correct answer: Trichogramma sp- A. Predator
- B. Pray
- C. Host
- D. Parasite
Explanation: The host is the organism that supports a parasite and is generally larger or more developed than it.
Correct answer: Host- A. Predator
- B. Parasites
- C. Prey
- D. Parasitism
Explanation: A predator is free-living and captures and kills prey, usually consuming one victim in a meal.
Correct answer: Predator1794. Population prediction of a particular species with in the field is called____________________?
- A. Haemospora
- B. Fore casting
- C. Surveillance
- D. Pest scouting
Explanation: Forecasting means predicting the future population or likely damage of a pest from field observations and environmental conditions.
Correct answer: Fore casting- A. Pest outbreak
- B. IPC
- C. IPM
- D. Pest resurgence
Explanation: Integrated Pest Management, or IPM, combines compatible biological, cultural, mechanical, and chemical methods to keep pests below the…
Correct answer: IPM- A. Key pest
- B. Major pest
- C. Minor pest
- D. Secondary pest
Explanation: A potential pest, also called a secondary pest in this classification, normally causes little damage but may become harmful when…
Correct answer: Secondary pest- A. Key pest
- B. Major pest
- C. Minor pest
- D. Secondary pestAccess Government Careers
Explanation: Cotton bollworms and sugarcane borers are major pests because they regularly cause significant economic damage to these crops.
Correct answer: Major pest- A. Key pest
- B. Occasional pest
- C. Migrant pest
- D. Potential pest
Explanation: The desert locust is a migrant pest because it moves over long distances in swarms and can invade crops far from its breeding area.
Correct answer: Migrant pest- A. None of the Above
- B. Economic injury level
- C. Economic damage
- D. Economic threshold level
Explanation: The economic threshold level is the pest density at which control should begin, so the population does not rise to the economic injury…
Correct answer: Economic threshold level- A. Economic damage
- B. Economic threshold
- C. Economic injury level
- D. None of the AboveTake Economics Courses
Explanation: Economic damage is the amount of crop injury or loss that makes artificial control financially worthwhile.
Correct answer: Economic damage