Plant Disease MCQ: MCQ Test (25 questions)

Question 1 of 25

Citrus Canker is a-

ASpecies of lemon
BMosaic disease
CA disease in lemon
DNone of these

Question 2 of 25

Heterothallism was discovered by-

AE.J Butler
BA.F. Blakelec
CJ.H. Graigic
DB.B. Mundkar

Question 3 of 25

Damping off of seedlings is caused by :

APeronospora parasitica
BPythium debaryanum
CAlbugo candida
DPhytophthora infestans

Question 4 of 25

Which of the following is used as rodenticide ?

AZinc phosphide
BZinc carbonate
CZinc chloride
DZinc sulphide

Question 5 of 25

Early blight of potato is caused by-

APhytopthora infestans
BAlternari solani
CAlbugo candida
DSclerospora graminicola

Question 6 of 25

The scientist who studied about wheat rust problem-

AH.C. Bose
BK.C. Mehta
CBirbal Shani
DD. D. pant

Question 7 of 25

Rust of wheat is a-

AFungal disease
BViral disease
CHormonal disorder
DBacterial disease

Question 8 of 25

In India famous Bengal famine occurred in 1943 by a disease in rice is called

ALate blight of rice
BRice rust
CLeaf spot of rice
DEarly blight of rice

Question 9 of 25

Red rust disease of tea is caused by-

ABacteria
BLichen
CFungi
DGreen algae

Question 10 of 25

Plant require Fe and Mg for-

ASynthesis of Chlorophyll
BOpening and closing of stomata
CEnergy transfer during photosynthesis and respiration
DTranslocation of carbohydrate

Question 11 of 25

Black rust of wheat is caused by-

AErysiphe
BAlbugo
CPuccinia gramiris
DColletatrichum

Question 12 of 25

Fungus responsible for disease late blight of potato is

ACercospora personata
BPhytophthora infestans
CClaviceps purpurea
DSclerospora graminicola

Question 13 of 25

Claviceps purpurea is the causal organism of-

ASmut of barley
BErogotism of rye
CPowdery mildew of pea
DRust of wheat

Question 14 of 25

Element playing role in nitrogen fixation-

AMn
BMo
CZn
DCu

Question 15 of 25

Deficiency of magnesium causes-

ANecrosis
BPlasmolysis
CHydrolysis
DChlorosis

Question 16 of 25

Nitrogen fixing enzyme found in root nodules is-

ANitrogen estrase
BNitrogenase
CNitrase
DNitrosomans

Question 17 of 25

Black heart of potato is due to-

ADeficiency of copper
BDeficiency of boron
CDeficiency of oxygen
DDeficiency of potassium

Question 18 of 25

Green ear disease is related with the crop-

AMustard
BPaddy
CBajara
DGround nut

Question 19 of 25

Red rot of sugarcane is caused by-

AColletotrichum falcatum
BCercopspora personata
CAlternaria alterrnata
DPhytophthora Infestans

Question 20 of 25

Which of the following stage of development of insect is most garmfull for crop ?

AEgg
BPupa
CCaterpillar
DEmago

Question 21 of 25

The deadly disease of groudnut is-

ATikka
BDamping off
CPowdery mildew
DNone of these

Question 22 of 25

Which of the following disease is not caused by fungus in plants ?

ATikka disease of ground nut
BRed rot of sugarcane
CGreen ear disease of bajara
DMosiac disease of bajara

Question 23 of 25

Which of the follwing fungus cause green ear disease of bajra-

APhytophthora infestans
BAlbugo Candida
CSclerospora graminicola
DCerrcospora personata

Question 24 of 25

The disease fire blight is related with-

AApple
BCoconut
COrange
DGrape

Question 25 of 25

White bud in maize indicates acute deficiency of-

ASulphur
BPotassium
CZinc
DManganese