Entomology MCQs - ICAR JRF - IBPS AFO - AGRI MPSC - AGRONOMY JRF

 

1. Insects are considered to be beneficial because they are

A) Effective pollinators
B) Make useful products
C) Act as biological control agents
D) all of these

ANSWER= (D) all of these
Explain:- all of these

 

2. In grasshoppers, the sclerite on the front of the head located between the frons & the labrum is

A) Clypeus
B) Maxilla
C) Gena
D) Vertex

ANSWER= (A)Clypeus
Explain:- Clypeus

 

3. The modified hind wings in flies (used for balance) are called

A) Elytra
B) Halteres
C) Hamuli
D) Tegmina

ANSWER= (B) Halteres
Explain:- Halteres

 

4. Another name for an insect walking leg is:

A) Ambulatory
B) Fossorial
C) Cursorial
D) Saltatorial

ANSWER= (C) Cursorial
Explain:- Cursorial

 

5. A spray that kills insects when they touch it is called

A) contact insecticide
B) fumigant
C) desiccant
D) stomach poison

ANSWER= (A) contact insecticide
Explain:- contact insecticide

 

6. You find something crawling on your dog that looks like a small flat brown bug; it has eight legs. It is

A) flea
B) brown bug
C) hoppers
D) tick

ANSWER= (D) tick
Explain:- tick

 

7. The use of X-ray irradiated flies for pest management is an example of

A) Sterile male release
B) Neoplasia induction
C) Mutant proliferation
D) Environmental hazards

ANSWER= (A) Sterile male release
Explain:- Sterile male release

 

8. Worker honey bees in a colony

A) Are all sterile females
B) Have the same mother
C) Are diploid
D) all of these

ANSWER= (D) all of these
Explain:- all of these

 

9. Which colour on the label of the container indicates the extremely toxic pesticide

A) Yellow
B) Orange
C) Blue
D) Red

ANSWER= (D) Red
Explain:- Red

 

10. Termites differ from honeybees in that they

A) Are haplo-diploid
B) Are diploid
C) Have a fertile queen and king in each colony
D) B and C

ANSWER= (D) B and C
Explain:- B and C

 

11. Family of the Droscha magniferae

A) Aleurodidae
B) Coccidae
C) Pyralidae
D) Aphididae

ANSWER= (B) Coccidae
Explain:- Coccidae

 

12. Family of the Spodoptera litura

A) Chrysomelidae
B) Noctuidae
C) Pyralidae
D) Anobiidae

ANSWER= (B) Noctuidae
Explain:- Noctuidae

 

13. Family of the Pectinophora gossypiella

A) Tenebrionidae
B) Noctuidae
C) Gelechiidae
D) Anobiidae

ANSWER= (C) Gelechiidae
Explain:- Gelechiidae

 

14. Family of the Bemisia tabaci

A) Aleurodidae
B) Apionidae
C) Pyrrhocoridae
D) Pyralidae

ANSWER= (A) Aleurodidae
Explain:- Aleurodidae

 

15.An example(s) of a relative method to assess economic threshold levels for an insect pest is:

A) Number of insects per leaf
B) Number of insects per plant
C) Number of insects per twig
D) all of these

ANSWER= (D) all of these
Explain:- all of these

 

16.Quarantine of an insect pest involves

A) Eradication of the pest
B) Limit the movement of the pest
C) Number of insects per twig
D) all of these

ANSWER= (B) Limit the movement of the pest
Explain:- Limit the movement of the pest

 

17. The equilibrium level in an insect population

A) Is the point at which insects can begin to migrate
B) Refers to fluctuations in the population around a mean
C) Is important in determining pest status
D) all of these

ANSWER= (B) Refers to fluctuations in the population around a mean
Explain:- Refers to fluctuations in the population around a mean

 

18. The honey bee waggle dance conveys information about the location of nectar sources to other worker bees in the hive. Which of the following senses do worker bees use to interpret the dance?

A) Sight
B) Smell
C) Touch
D) Taste

ANSWER= (A) Sight
Explain:- Sight

 

19. What is the insect auditory sense structure that detects sound (analogous to the human ear) called?

A) Antenna.
B) Kairomone.
C) Tympanum.
D) Luciferin.

ANSWER= (C) Tympanum
Explain:- Tympanum

 

20.The honey bee worker has a “stinger” which

A) Is a modified ovipositor and associated with a poison gland that produces the venom..
B) Has a barb on it which can imbed into the skin and be released by muscles to allow the bee to sting another victim..
C) Has a barb on it which can imbed into the skin of an animal and is left behind to continue injecting venom into the victim.
D) A and C.

ANSWER= (C) A and C
Explain:- A and C