JUNE – 2021
B. Sc. (IV Semester) Examination
BOTANY
Paper: BOT SBST-242 (Optional-II)
(Mushroom Cultivation)
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
Note: (i) Answer all the questions.
(ii) The figures in the margin indicate full marks for the questions.
1. State and Explain the following (any five): 2x5= 10
(a) Stepping preservation
(b) Bulk chamber
(c) Rose comb
(d) BOD incubator
(e) Mushroom fly
(f) Veil
2. Answer any four of the following: 5x4= 20
(a) Write briefly on Taxonomic Characteristics of Agaricus bisporus
(b) Discuss about the applications of laminar flow chamber
(c) What is chemical pasteurization?
(d) Discuss about various supplements used in compost preparation
(e) Discuss the use of spent mushroom substrate.
3. Answer any five of the following: 10x5= 50
(a) Describe nutritive value of Pleurotus
(b) Discuss storage techniques of fresh mushroom
(c) What is mushroom poisoning? Discuss briefly about some poisonous species of mushroom
(d) Describe spawn preparation method of Agaricus
(e) Write briefly on vitamin content of mushrooms
(f) Briefly discuss about steam pasteurization of compost
(g) Describe nutritional value of Volvariella
(h) Describe symptoms and control measures of vet bubble disease
