Free Plant Protection MCQs with Answers

• 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.

• 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…

• 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.

• A. IPM
• B. IPC
• C. Pest resurgence
• D. Pest outbreak

Explanation: Pest resurgence is the rapid return of a pest to damaging numbers after its population has been reduced, often following pesticide use.

• A. Insect
• B. Insect pest
• C. none of the above
• D. Pest

Explanation: A pest is any organism that harms humans, their crops, livestock, stored products, or property directly or indirectly.

• A. Mole cricket
• B. Ground beetles
• C. Pyrilla
• D. Gryllobllated

Explanation: Mole crickets live in the soil and cut or damage plant roots while tunnelling.

• A. Vitamin C
• B. Vitamin B
• C. Vitamin A
• D. Vitamin D

Explanation: Many insects need B-group vitamins for normal growth, development, and metabolism, and some obtain them through their diet or symbiotic…

• A. Tineidae
• B. Pyralidae
• C. Tineidae and Pyralidae
• D. Culicidae

Explanation: Tineid larvae commonly feed on wool, feathers, hair, and other organic debris, while several pyralid larvae act as scavengers in stored…

• A. Bombicidae
• B. Pyralidae
• C. Tineidae
• D. Culicidae

Explanation: Mosquitoes belong to the family Culicidae, which includes genera such as Anopheles, Aedes, and Culex.

• A. Fire flies
• B. Flies
• C. Wasps
• D. Honey bee

Explanation: Fireflies possess photogenic, or light-producing, organs that generate bioluminescence through a luciferin-luciferase reaction.

• A. May be a non reproductive male or non reproductive female
• B. A non reproductive female
• C. A non reproductive male
• D. none of the above

Explanation: Workers in ants, bees, and wasps are generally sterile or non-reproductive females.

• A. Agricultural pest, house hold, Store grain, Pollinators
• B. Agricultural pest, Parasite, Predator
• C. Store grain, Parasite, Predator
• D. Agricultural pest, house hold pest, Store grain, insects of domestic animals

Explanation: Injurious insects include crop pests, household pests, stored-grain pests, and insects that attack or annoy domestic animals.

• A. Silk worms Lac insects Honey bees
• B. Parasites, Predators, Pollination
• C. Silk worm, Pollinators, Predators
• D. Lac insect, Honey bees, pollinator

Explanation: Silkworms produce silk, lac insects produce lac resin, and honey bees provide honey and other hive products.

• A. Sericulture
• B. Lac culture
• C. Floriculture
• D. Apiculture

Explanation: The commercial rearing of lac insects on suitable host plants is called lac culture or lac cultivation.

• A. Alarm pheromone
• B. Aggregation pheromone
• C. Trial marking pheromone
• D. Sex pheromone

Explanation: Trail-marking pheromones leave a chemical path that other insects follow, especially in ants and termites.

• A. Alarm pheromone
• B. Aggregation pheromone
• C. Sex pheromone
• D. Trial marking pheromone

Explanation: Alarm pheromones warn nearby members of the same species about danger and may trigger escape or defensive behaviour.

• A. Termitorium
• B. Cage
• C. Hive
• D. Comb

Explanation: A termite colony or nest is called a termitarium. Option a gives the intended term, though “Termitorium” is a spelling variant or error.

• A. Social insects
• B. Gregarious
• C. Solitary insects
• D. Stored grain insects

Explanation: Solitary insects live and reproduce individually rather than maintaining a colony with coordinated castes.

• A. None of the above
• B. Stored grain insect
• C. House hold insect
• D. Social insect

Explanation: Social insects live in organized colonies and often show a caste system, as in honey bees, ants and termites.

• A. Pilosity
• B. Biotype
• C. Genotype
• D. Phenotype

Explanation: A biotype is a population or group sharing a particular genetic constitution, often identified by a distinctive response to a host or…