Sunday, May 2, 2021

Fruit Tree Problems: Multiple Choice Questions on Cocoa Diseases

 Previous post during last year was on Fruit Tree Problems: MCQs on Arecanut Diseases. This year I am continuing with other set of questions. You may answer these in comment section

Q 1 Phytophthora palmivora causes _____________________ disease of cocoa

a. Seedling die back

c. Black pod disease

b. Stem canker

d. All the above

Q 2 White thread blight is caused by

a. Marasmius scandens

c. Botryodiplodia theobromae

b. Colletotrichum gloeosporioides

d. Oncobasidium theobromae

Q 3 White thread blight spread through

a. Contact of branches

c. Contact of plant to plant

b. Contact of mycelium

d. Dead leaves carried by wind

Q 4 Characteristic symptom(s) of Black pod diseases of cocoa

a. Appearance of brown spots on pods

c. Both a and b

b. Discoloration of brown spots & infected beans

d. None of these

Q 5 Favourable conditions for black pod

a. High density plants accompanied with shady location with cool temp.

c. HDP with RH upto 90% and Temp 30-35oC

b. High density plants in rainy weather with high temperature

d. HDP with RH >95% and Temp 30-35oC

Q 6 Charcoal pod rot of cocoa is caused by

a. Marasmius scandens

c. Botryodiplodia theobromae

b. Colletotrichum gloeosporioides

d. Oncobasidium theobromae

Q 7 Asexual fruiting body produced by Botryidiplodia theobromae

a. Acervulus

c. Pseudothecium

b. Pycnidia

d. Apothecium

Q 8 Causal organism of cocoa swollen shoot is

a. Phytoplasma

c. Bacteria

b. Virus

d. Fungus

Q 9 Characteristic symptom of cherelle rot is

a. Shrunken infected stalk with mummified fruit

c. Both a. and b.

b. Brown discolored beans under high humid conditions

d. None of these

Q 10 Vascular streak dieback of cocoa has been reported only from

a. Tamil Nadu

c. Karnataka

b. Kerala

d. Telangana

 



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