Agriculture Science Multiple Choice Questions and Answers | Crop Protection Questions -Agricultural Entomology and Plant Pathology

1. Which of the following statement is TRUE about mouth parts of insect?

(i)    In hemiptera, mandibles, maxillae and labium are elongate structures and are fluid feeders

(ii)   Thysanoptera are solid feeders

(iii)   Locusts and caterpillars having biting and chewing type of mouthpart

        A:-(i) and (iii)

        B:-(ii) and (iii)

        C:-only (i) and (ii)

        D:-All of the above (i), (ii) and (iii)

        Correct Answer:- Option-A

2.Which of the following statement is TRUE about economic damage by insect?

(i)    The lowest level of injury where damage can be measured is called Economic Threshold Level (ETL)

(ii)   Gain Threshold has been used to express the beginning point of economic damage

(iii)   Economic Injury Level (EIL) is the minimum number of insects that would reduce yield equal to the gain threshold

        A:-(i) and (ii)

        B:-(ii) and (iii)

        C:-Only (iii)

        D:-Only (i)

        Correct Answer:- Option-B

Agriculture Science Multiple Choice  Questions and Answers

3. An Act to regulate the import, manufacture, sale, transport, distribution and use of insecticides in India

        A:-Destructive Insect and Pest Act, 1914

        B:-Insecticide Act, 1971

        C:-Insecticide Act, 1968

        D:-Both (1) and (3)

        Correct Answer:- Option-C

4. Which of the following statement is FALSE about pests of rice?

        A:-An important Natural Enemy of rice stem borer is Tetrastichus schoenobii

        B:-Cyrtorhinus lividipennis is a predator of Rice bug

        C:-Larvae of rice thrips lacerate the tender leaves and suck up the plant sap causing rolling and drying of the leaf tips

        D:-Flooding helps to reduce the infestation of rice swarming caterpillar

        Correct Answer:- Option-B

5. Insecticide not included under Neonicotinoid group





        Correct Answer:- Option-D

6. Which of the following statement is TRUE about Insect Growth Regulators (IGR)?

        A:-IGR which disrupt metamorphosis are called juvenile hormone

        B:-IGR are called second generation insecticides

        C:-Flonicamid is a novel IGR

        D:-Azadirachtin is not an IGR

        Correct Answer:- Option-A

7. Anticoagulant rodenticide



        C:-Both (1) and (2)


        Correct Answer:- Option-C

8. Select correct statement in connection with honey bees

(i)    The mouth parts are piercing and sucking type

(ii)   The drones being females lack a sting

(iii)   Fore leg is antenna cleaner

        A:-(i) and (ii)

        B:-(i) and (iii)

        C:-Only (iii)

        D:-(i), (ii) and (iii)

        Correct Answer:- Option-C

9.The gene which controls victorin production in fungus Cochliobous victoriae

(i)   Tox3

(ii) Tox2

(iii) Hct3

(iv) Hct2

        A:-(i) and (ii)

        B:-(ii) and (iv)

        C:-(i) only

        D:-(iii) only

        Correct Answer:- Option-C

10:-Which of the following statements are true?

(i)    Ediphenphos inhibit chitin synthesis

(ii)   Strobilurins inhibit mitochondrial respiration

(iii) Triazoles inhibit sterol biosynthesis

(iv) Metalaxyl inhibit mitosis

        A:-(i), (ii) and (iii)

        B:-(i), (ii), (iii) and (iv

        C:-(ii) and (iii)

        D:-(i), (ii) and (iv)

        Correct Answer:- Option-A

11. Which of the following fungicides have colour code of green representing toxicity level?

(i)    Fosetyl-Al

(ii)   Strobilurin

(iii) Metalaxyl

(iv) Potassium phosphonate

        A:-(i), (ii) and (iii)

        B:-(i), (ii), (iii) and (iv)

        C:-(ii) and (iii)

        D:-(i), (ii) and (iv)

        Correct Answer:- Option-D

12. Genes in rice offering resistant to Magnaporthe oryzae

(i)    Pi44

(ii)   Pi54

(iii) Pi64

(iv) Pi74

        A:-(i), (ii), (iii) and (iv)

        B:-(i), (ii) and (iii)

        C:-(ii) and (iii)

        D:-(i), (ii) and (iv)

        Correct Answer:- Option-B

13. Secretion system in Agrobacterium tumefaciens involved in the delivery of (T) DNA from bacterial system into host plant cell





        Correct Answer:- Option-A

14. PR-protein which do not have their properties and functions related to chitinase

        A:-PR 3

        B:-PR 4

        C:-PR 5

        D:-PR 8

        Correct Answer:- Option-C

15. Genetic material in MS2 bacteriophage





        Correct Answer:- Option-A

16. Hyperparasite of rust fungi

        A:-Paecilomyces lilacinus

        B:-Ampelomyces quisqualis

        C:-Pichia gulliermondii

        D:-Darluca filum

        Correct Answer:- Option-D

17 .Match the following:

(i)    Common bunt                 (a)    Neovossia indica

(ii)   Dwarf bunt                     (b)    Tilletia caries

(iii) Partial bunt                     (c)    Urocystis tritici

(iv) Flag smut                        (d)   Tilletia contraversa

        A:-(i)-(d), (ii)-(a), (iii)-(b), (iv)-(c)

        B:-(i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)

        C:-(i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)

        D:-(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)

        Correct Answer:- Option-B

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