Free Plant Protection MCQs with Answers

• A. Honeybees
• B. Termites
• C. Black ants
• D. None of the above

Explanation: Honeybees are highly social insects because they live in colonies with distinct castes, division of labour and coordinated brood care.

• A. Chemical which prevent feeding
• B. Prevent feeding and oviposition of an insect
• C. Prevent ovipositon of an insect
• D. None of the above

Explanation: A deterrent is a chemical or plant trait that discourages insect feeding, egg-laying, or both.

• A. Horizantal resistance
• B. Specific resistance
• C. General resistance
• D. Cross resistance

Explanation: Cross-resistance occurs when resistance to one insecticide also gives resistance to another insecticide with a similar mode of action or…

• A. Cross resistance
• B. Specific resistance
• C. Vertical resistance
• D. General resistance

Explanation: General resistance is effective against several or all biotypes of an insect species and is also commonly termed horizontal or…

• A. Vertical resistance
• B. Horizontal resistance
• C. Specific resistance
• D. Cross resistance

Explanation: A differential reaction between particular cultivars and insect biotypes indicates specific, or vertical, resistance.

• A. Termites
• B. Termites, Ants< bees
• C. Butterflies
• D. Ants bees

Explanation: Termites, ants and bees all display social behaviour, including colony living and division of labour.

• A. Allelo chemicals
• B. Releasers
• C. Semio chemicals
• D. Primers

Explanation: Primer pheromones produce slow, long-lasting physiological or developmental effects, whereas releaser pheromones produce rapid behavioural…

• A. Pheromone
• B. Hormone
• C. Juvinile Hormone
• D. Ecdysone

Explanation: Pheromones are chemical signals released outside the body to communicate with other members of the same species.

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

Explanation: Chemokinesis is a change in locomotory activity caused by a chemical stimulus such as an odour.

• A. Johnston's organ
• B. Chorodotonal organ
• C. Tympanal organ
• D. None of the above

Explanation: Grasshoppers detect sound through tympanal organs, located on the first abdominal segment.

• A. Paedogenesis
• B. Polyembryony
• C. Viviparity
• D. Polyembrony

Explanation: Paedogenesis is reproduction by immature stages, such as larvae or pupae, before reaching adulthood.

• A. Ants
• B. Termites
• C. Silver fish
• D. None

Explanation: Termites harbour symbiotic bacteria and other microorganisms in their digestive system, which help digest cellulose from wood and plant…

• A. Carbohydrates
• B. Lipases
• C. Proteases
• D. Amylase

Explanation: Proteases hydrolyse proteins into smaller peptides and amino acids. Lipases digest fats, whereas amylase acts mainly on starch and other…

• A. Pharynx
• B. Crop
• C. Esophagus
• D. Gizzard

Explanation: The proventriculus is the insect foregut’s muscular grinding chamber and is commonly called the gizzard.

• A. Juvenile
• B. Ecdysone
• C. Activation hormone
• D. None of the above

Explanation: Ecdysone initiates moulting by promoting the shedding and replacement of the old cuticle.

• A. Acron
• B. Subgenital plate
• C. Paraproct
• D. Somites

Explanation: The paraprocts are terminal abdominal structures associated with the last segment and may assist in supporting or positioning the genital…

• A. Somites
• B. Conjunctivae
• C. Sutures
• D. Sclerites

Explanation: The insect exoskeleton is divided into hardened plates called sclerites.

• A. Extensiblity of integument and flexibility
• B. Rigidity of body parts
• C. Prevent evaporation
• D. Impermeability of water

Explanation: The endocuticle is the softer, more flexible inner part of the insect cuticle, allowing the integument to extend and body parts to move.

• A. Rigidly of body parts
• B. Impermeability of water
• C. Prevent evaporation
• D. Impermeability of water and prevent evaporation

Explanation: The epicuticle contains waxes that make the insect surface waterproof and reduce loss of body water through evaporation.

• A. Fossorial
• B. Metatorial
• C. Basket like
• D. Raptorial

Explanation: Dragonflies and damselflies use their legs together as a basket for trapping prey during flight.