All Free Agriculture MCQs with Answers

• A. Pest avoidance
• B. Resistance
• C. Plant resistance
• D. Tolerance

Explanation: Pest avoidance is the plant's tendency to escape infestation, often through characteristics such as unsuitable growth timing, structure…

• A. Semio chemicals
• B. Allelo chemicals
• C. Primers
• D. ReleasersDownload Nature Guides

Explanation: Allelochemicals are chemical signals exchanged between organisms of different species, whereas pheromones act between members of the same…

• A. Chemokinesis
• B. Klinokinesis
• C. Hydrokinesis
• D. Stereokinesis

Explanation: Stereokinesis is movement or locomotor activity triggered by contact or touch.

• A. Releasers
• B. Primers
• C. Semiochemicals
• D. Allelochemicals

Explanation: Releaser pheromones produce a rapid behavioural response, while primer pheromones cause slower physiological or developmental changes.

• A. Orthokinesis
• B. Kinesis
• C. Uniokineses
• D. Hydrokinesis

Explanation: Kinesis is nondirectional movement in which the stimulus affects activity but does not determine the direction of movement.

• A. Polyenibryony
• B. Pacdogenesis
• C. Vtviparity
• D. Parthenogenesis

Explanation: Parthenogenesis is reproduction in which offspring develop from unfertilized eggs.

• A. Sugar breakers
• B. Fat and oil breakers
• C. Protein breakers
• D. Oxygen breakersHire Grant Writers

Explanation: Carbohydrases break down carbohydrates into simpler sugars, so they are called sugar-breaking enzymes.

• A. Causes moulting
• B. 2nd and 3rd both
• C. Maintains immature forms during larval moults
• D. Larval organism is to be made after moulting

Explanation: Juvenile hormone preserves larval characteristics during moulting, so the insect remains immature after the moult.

• A. Prevent evaporation
• B. impermeability of water
• C. Rigidity of body parts
• D. Toughness and flexibility

Explanation: The exocuticle is the hardened, sclerotized outer part of the cuticle and gives insect body parts rigidity.

• A. Integument
• B. Exoskeleton
• C. Internal skeleton
• D. None of the above

Explanation: The integument is the complete insect body wall, consisting of the cuticle, epidermis and basement membrane.

• A. Raptiorial
• B. Saltatorial
• C. Cursorial
• D. Netatiorial

Explanation: Grasshoppers have enlarged hind legs adapted for jumping, called saltatorial legs.

• A. Basket like
• B. Netatorial
• C. Cursorial
• D. Fossorial

Explanation: Ants, butterflies, wasps and moths generally use cursorial legs for walking or running.

• A. Frenulum
• B. Jugum
• C. Retainaculum
• D. hamuli

Explanation: Hamuli are small hooks on the hind-wing margin of bees that engage the forewing and couple the two wings during flight.

• A. Membrarieous
• B. Stripy
• C. halteres
• D. Elytra

Explanation: Thrips have narrow, strap-like wings fringed with hairs, represented here by “stripy” or strip-like wings.

• A. Filohalteres
• B. Halteres
• C. pseudohalteres
• D. Hemelytra

Explanation: In Strepsiptera, the forewings are reduced and modified into balancing organs called pseudohalteres.

• A. hemelgtra
• B. Hemelytra
• C. Stripy
• D. Tegmina

Explanation: Grasshoppers and cockroaches have leathery forewings called tegmina, which protect the more delicate hindwings.

• A. Obtect
• B. Coarctate
• C. Platyform
• D. Exarate

Explanation: An exarate pupa has free, visible appendages that are not glued to the body.

• A. campo deiform
• B. Vermiform
• C. Eruci form
• D. Scarabaeiform

Explanation: Vermiform larvae are elongated and cylindrical, usually tapering toward the front, and lack legs.

• A. Eggs
• B. Pupae
• C. Larvae
• D. Naiad

Explanation: Campodeiform is a larval form resembling the active, elongated nymph of Campodea, usually with well-developed legs and a distinct head.

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

Explanation: The apical margin is the outer margin at the wing tip, opposite the basal or inner margin.