All Free Agriculture MCQs with Answers

• A. Prognathous
• B. Hypognathous
• C. Opisthognathous
• D. Opis thosynchous

Explanation: A prognathous head has the mouthparts directed forward, with the long axis of the head broadly aligned with the body axis.

• A. Hinder margin
• B. Outer margin
• C. Frontal margin
• D. Inner margin

Explanation: The costal margin is the leading or anterior edge of an insect wing, also called the frontal margin.

• A. Biting and sponging type
• B. Piercing sucking type
• C. Chewing lapping type
• D. Biting chewing type

Explanation: Grasshoppers and crickets have mandibulate mouthparts adapted for biting and chewing plant material.

• A. Thrips
• B. Aphid
• C. Housefly
• D. None

Explanation: Thrips have asymmetrical rasping-sucking mouthparts because one mandible is reduced and the mouthparts are adapted to scrape plant tissue.

• A. Elongate
• B. Stalked
• C. Conical
• D. Oval

Explanation: Whitefly eggs are typically stalked, with each egg attached to the leaf by a short stalk.

• A. Pleuron
• B. Tergum
• C. None of the above
• D. Sternum

Explanation: The sternum is the ventral, or lower, sclerotized region of an insect body segment.

• A. Tergum
• B. Pleuron
• C. Sternum
• D. None of the above

Explanation: The tergum is the dorsal, or upper, sclerotized region of an insect body segment. Its corresponding ventral region is the sternum.

• A. Insect ecology
• B. Insect PhysiologyInsects & Entomology
• C. None of the above
• D. Insect morphology

Explanation: Insect physiology studies how insect body parts and systems function, whereas morphology deals with their form and structure.

• A. Scape, club, flagellum
• B. Ring, funicle, club
• C. Scape pedicel, flagellum
• D. Pedicle, scape, club

Explanation: An insect antenna normally consists of three basic parts: scape, pedicel and flagellum.

• A. Cosmopolitan insects
• B. Household insects
• C. Store grain
• D. None of the above

Explanation: Cosmopolitan insects occur across very broad geographic regions, often nearly worldwide.

• A. Parasite
• B. Predator
• C. Scavenger
• D. Parasite

Explanation: A predator is a free-living organism that captures and feeds on other organisms, usually killing them in the process.

• A. Diurnal insects
• B. Nocturnal insects
• C. Crepuscular insects
• D. None of the above

Explanation: Crepuscular insects are most active during twilight, especially around dawn or dusk.

• A. Diurnal insects
• B. Crepuscular insects
• C. Nocturnal insects
• D. None of the aboveInsects & Entomology

Explanation: Nocturnal insects are active mainly during the night. Crepuscular insects are associated with dawn and dusk, whereas diurnal insects are…

• A. Eggs
• B. None of the above
• C. Nymph
• D. Young ones

Explanation: Viviparous insects give birth to live young rather than laying eggs externally.

• A. Pectinophora gossypiella (Pink bollworm)
• B. Ants
• C. Green lacewing
• D. Helicoverpa armigera

Explanation: Pectinophora gossypiella, the pink bollworm, is essentially restricted to cotton and is therefore monophagous.

• A. Aestivation
• B. Starvation
• C. Dormancy
• D. Non of the above

Explanation: Starvation is the physiological suffering or condition caused by inadequate food.

• A. Acrotergata
• B. Antecosta
• C. Tagmata
• D. None of the above

Explanation: The three principal insect body regions, head, thorax and abdomen, are tagmata, meaning specialized body divisions.

• A. Pleuron
• B. Tergum
• C. Sternum
• D. None of the above

Explanation: The pleuron is the lateral sclerotized region of an insect body segment, especially evident on the thorax.

• A. Stylate
• B. Aristate
• C. Ensiform
• D. Capitate

Explanation: Houseflies have aristate antennae, recognized by the prominent bristle-like arista arising from the third antennal segment.

• A. Aristate, plumose
• B. Pectinate, Pilose
• C. Plumose, pilose
• D. Pectinate, plumose

Explanation: Male mosquitoes have plumose antennae with dense whorls of long hairs that detect female wing-beat sounds, whereas females have pilose…