Saturday, March 28, 2020

Question Bank for Apple Diseases




During the period of lockdown, I thought to help my students in preparation for their exams. Today I am starting with few questions on apple diseases, which may come handy for your exams in near future. Tomorrow I shall be posting some more questions.


MCQ. 

Q 1 The disease which had endangered the very existence of delicious apples.
a. Powdery mildew
c. Fruit spots
b. Apple scab
d. Root rot

Q 2 The breeding of scab resistant varieties of apple was undertaken.
a. IARI
c. RFRS – Mashobra
b. ICAR
d. RFRS – Bikaner

Q 3 The root rot of apple is caused by.
a. Phytophthora cactorum
c. Corticium salmonicolor
b. Podospharea leucotricha
d. Botryosphaeria obtusa

Q 4 Silvering of foliage appears soon after petal fall is the typical symptoms of
a. Nail head canker
c. Pink disease
b. Leaf canker
d. Fruit spots

Q 5 Hairy root is due to.
a. Agrobacterium tumefaciens
c. Podospharea leucotricha
b. Dematophora necatrix
d. Corticium salmonicolor

State True /False

Q 6 The Primary Source of Inoculum  for apple scab is zoospores of pseudothecium.
Q 7 The apple rust is a heterocious & also monocyclic disease.
Q 8 Apple crown rot. Root rot, Collar rot are the complete loss disease caused by a single organism Dematophora necatrix.
Q 9 Apple Dapple /Apple scar skin is a viroid disease.
Q 10 The two crab apples Malus floribunda & Malus toringoides are have resistance against the root rot.
Q 11 Bitter rot, Sour rot, Brown rot are not post harvest diseases.
You may answer these questions in comment box. I shall be posting the answers soon in comment section


2 comments:

  1. Answers: 1-b, 2-c, 3-a, 4-b, 5-a, 6-F, 7-F, 8-F, 9-T, 10-T, 11-F

    ReplyDelete
  2. Answers
    MCQ
    1-B
    2-C
    3-A
    4-B
    5-A
    True and false
    6-F
    7-F
    8-F
    9-T
    10-F
    11-F

    ReplyDelete