Plant Pathology and Mushroom Production | Technical Stream | Question Paper 2081-2024 of Class 12 | NEB

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Group 'A' [9x1=9]

Rewrite the correct options of each questions in your answer sheet.

1. Death of tissue in virus infected plant is

A) Mottling
B) Necrosis
C) Mosaic
D) Puckering

2. Cercospora spp is causative agent of

A) Wilt in chickpea
B) Tikka disease of groundnut
C) Ear rot of maize
D) Rust of wheat

3. Bordeaux mixture is effective against :

A) Virus
B) Bacterium
C) Fungus
D) All of above

4. Bunchy top of Banana is caused by

A) Fungus
B) Bacterium
C) Nematode
D) Virus

5. Which of the following is common method of preservation of mushroom ?

A) Freezing
B) Canning
C) Drying
D) Pickling

6. Which mushroom is known as 'the dancing mushroom' ?

A) Psilocybe cubensis
B) Amanita muscaria
C) Gymnopilus junonius
D) Copelandia cyanescens

7. The main factor influencing the quality of shiitake mushroom is

A) Light exposure
B) Temperature fluctuation
C) Humidity level
D) Soil PH

8. The optimum temperature range for cultivating oyster mushroom is...

A) 150C to 200 C
B) 200C to 250 C
C) 250C to 300 C
D) 300C to 350C

9. The characteristics of nematode infestation in crops is...

A) Yellowing of leaves
B) Leaf curling
C) Root knot
D) Rust colored spot on leaves

Group 'B'

Short answer questions [5x5=25]

10. Enlist the five major diseases of maize. Describe the control measure of maize diseases.

11. Write the name of causative agent and major symptoms of Rice leaf blast and northern leaf blight of maize.

12. Describe the cultivation practices of Shiitake mushroom.

13. Write short notes on :

a) Log preparation in Shiitake mushroom
b) Spawn production of oyster mushroom

14. Write main symptoms of following diseases of mushroom :

a) Brown plaster mould
b) White bubble disease
c) Green mould
d) Cob web mould
e) Bacterial blotch

Group 'C'

Long answer questions [2x8=16]

15. Describe about the production of button mushroom starting from compost preparation to harvesting. [8]

16. Differentiate early blight and late blight in reference to potato. Write major management practices of early blight and late blight in potato. (2+2+2+2)

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Plant Pathology and Mushroom Production Technical Stream Question Paper 2081-2024 of Class 12 NEB.

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