Sunday, April 5, 2020

Fruit Tree Problems: Multiple Choice Questions on Jackfruit Diseases

In my previous post I have posted MCQs on plum diseases. Hope you might have enjoyed solving it. Today I am going to post MCQs on Jackfruit diseases. I have included two disease management questions. These will help you in understanding the choice of fungicides in the management of diseases

Q 1 Die back of jackfruit is caused by
a. Rhizopus artocarpus
c. Phytopthora palmivora
b. Stigminia carpophila
d. Botryodiplodia theobromae
Q 2 On dying back twigs following vegetative fruiting structure can be seen
a. Pycnidia
c. acervuli
b. apothecia
d. perithecia
Q 3 Primary source of inoculum of jackfruit die back is
a. dormant mycelia
c. soil borne conidia
b. conidia developed in pycnidia
d. air borne conidia
Q 4 Following conditions are favourable for die back development in jackfruit
a. Temp 15-20oC and RH 80-85%
c. Temp 25-30oC and RH 80-85%
b. Temp 25-30oC and RH 85-90%
d. Temp 15-20oC and RH 85-90%
Q 5 Fruit rot of jackfruit is caused by
a. Rhizopus artocarpus
c. both of these
b. Phytopthora palmivora
d. none of these
Q 6 Leaf spot of jackfruit is caused by
a. Alternaria alternate
c. Pestalotiopsis clastica
b. Pseudomonas syringae pv.syringae
d. Phytophthora palmivora
Q 7 Characteristic symptom of jackfruit leaf spot disease is
a. dark brick red spots on upper leaf surface
c. dark brick red spots on both leaf surfaces
b. dark brick red spots on lower leaf surface
d. white spots with grey center
Q 8 Pink disease of jackfruit is caused by
a. Botryobasidium salmonicolaor
c. a & b
b. Corticium salmonicolor
d. None of these
Q 9 Jackfruit leaf spot can be managed by
a. Carbendazim @0.1%
c. Thiophanate methyl @0.2%
b. Difolatan @0.2%
d. All of these
Q 10 Phytophthora rot of jackfruit is managed by
a. Bordeaux mixture @1%
c. Carbendazim @0.1%
b. Thiophanate methyl @0.2%
d. Difolatan @0.2%
You can check the answers in comment box now.


  1. 1-d, 2-a, 3-a, 4-c, 5-c, 6-c, 7-c, 8-c, 9-d, 10-a

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