Plant Pathology Question Bank PDF | Pest Control Multiple Choice Questions


1. Fungicides are used for checking the infection 

(a) bacteria

(b) fungi

(c) virus

(d) Both (b) and (c)

Ans. b

2. Which of the following is not a method of plant disease control?

(a) Pathogen exclusion

(b) Pathogen eradication

(c) Inoculation of pathogen

(d) Plant protection

Ans. c

3. Fungicide is a 

(a) amino acid

(b) hormone

(c) pesticide

(d) mineral

Ans. c

4. Sterilisation of soil is a part of  

(a) pathogen exclusion

(b) pathogen eradication 

(c) plant protection

(d) None

Ans.  b

5. Sanitation is a part of which of the following method of plant disease control?

(a) Plant exclusion

(b) Piant eradication

(c) Plant protection

(d) None of the above

Ans. b

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6. Use of various techniques of plant disease control under one roof is called

(a) IM 

(b) CPM

(c) TPM

(d) None of these

Ans. a

7. Use of latest pesticide is the part of

(a) pathogen exclusion

(b) pathogen eradication

(c) plant breeding

(d) integrated management

Ans. d

8. Roguing and pruning of affected plants is necessary for  

(a) hybridisation 

(b) pathogen eradication

(c) plant breeding

(d) tissue culture

Ans. b

9. The bordeaux mixture, an inorganic copper fungicide used for the treatment of plant diseases was developed by

(a) Paul Berg 

(b) Louis Pasteur

(c) Joseph Lister

(d) JH Millardet

Ans. d

10. In plant disease control, protection of the host from any pathogen is

(a) curative measure 

(b) roughing

(c) prophylactic method

(d) therapeutic method

Ans. c

Plant Pathology Objective Questions Answers PDF

11. Which of these is a fungicide? 

(a) BHC

(b) DDT

(c) Bordeaux mixture

(d) 2, 4-D

Ans. c

12. A biological control practice is   

(a) tillage

(b) crop rotation

(c) roughing

(d) hyperparasitism

Ans. d

13. Exclusion of plant disease by legislation is known as

(a) disease resistance

(b) plant quarantine

(c) biological control of plant

(d) cultural control

Ans. b

14. The chemical present in flit is

(a) malathion 

(b) DDT


(d) Aldicrab

Ans. a

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15. The common mode of action of herbicide is

(a) blocking of phloem

(b) blocking of xylem

(c) blocking of photosystem-1

(d) blocking of photosystem-2

Ans. d

16. Clchineal insect has been used, in checking the growth of

(a) Opuntia 

(b) Eichhornia

(c) aphids

(d) screw worm

Ans. a

17. Which of the following is weedicide?

(a) Mala thione

(b) Carbamates 

(c) Bordeaux mixture

(d) 2, 4D

Ans. d

18. Which of the following is not matched? Malathion Carbofuran

(a) Organophosphate

(b) Carbamate

(c) Organochlorine

(d) Pyrethroid DDT Atrazine

Ans. d

19. Natural insecticide obtained from plant

(a) azadirachtin

(b) rotenone 

(c) pyrethrum and cinerin

(d) All of these

Ans. d

20. The pesticides having very low biodegradation and strong affinity for fatty tissue are

(a) Organochlorine

(b) Triazenes

(c) Organophosphate

(d) Pyrethroids

Ans. a