Goa Board Class 12 Question Paper Mar 2019 Commercial Crops

2019 III 14 1000 Seat No.

Time : 2 Hours Commercial Crops

Subject Code
V 2 9 4

Total No. of Questions : 5 (Printed Pages : 4) Maximum Marks : 50

INSTRUCTIONS : (i) All the questions are compulsory.

(ii) Figures to the right indicate full marks.

(iii) New question should be started on fresh page.

(iv) Draw diagrams wherever necessary.

1. (A) State two selection criteria of arecanut seedlings used for planting in the

main field. 1

(B) State true or false : 2

(i) Orthotropic shoots of black pepper are used in bush pepper nursery.

(ii) Oil palm can be cultivated as rainfed crop in Goan conditions.

(C) Discuss cultivation of cashew with reference to soil requirement and

training operations. 2

(D) (i) State harvesting/maturity indices observed in Mango. 2

(ii) Discuss in detail, post-harvest processing of turmeric rhizomes. 3

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2. (A) State pest and disease (one each) of arecanut. 1

(B) Select the correct alternative and rewrite the sentences : 2

(i) ..................... present in Kokum fruit fights cholesterol and curbs

lepogenesis, thus adding weight loss.

(Sulphuric acid, Hydroxycitric acid, Normal acid)

(ii) Each individual piece of fruit on oil palm fruit bunch contains

................... oil.

(17%, 25%, 50%)

(C) Discuss symptoms of bud rot in coconut and give measures to control

disease. 2

(D) (i) State selection criteria for scion and rootstock in epicotyle grafting

of mango. 2

Or

(i) Write a short note on ‘Alternate or Biennial bearing’ in mango. 2

(ii) Write only flow-chart of process for mix fruit jam. 3

Or

(ii) Write only flow-chart of process for sweet mango chutney. 3

3. (A) State two hybrid varieties of coconut. 1

(B) Name the following : 2

(i) Botanical name of cinnamon.

(ii) The management practice through which, field heat of the harvested

produce is removed, in order to have extended shelf life.

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(C) What do you mean by Waxing ? What are its adverse effects on fruits ? 2

(D) (i) Write a short note on ‘Infestation and management of cashew stem

and root borer’. 2

Or

(i) Explain rejuvenation of low yielding seedling progenies of cashew.

(ii) Calculate the cost of raising papaya given that, area is 8,000 sq. mt.

planting distance is 1.8 m × 1.8 m; cost of each seedling is Rs. 20;

cost of digging each pit is Rs. 18, cost of refilling and planting is

Rs. 5 per plant and cost of fertilizers is Rs. 8 per plant. 3

Or

(ii) Calculate cost of raising kokum on 12,000 sq. mt. area given that,

planting distance is 6 mt. × 6 mt., cost of each kokum seedling is

Rs. 20, cost of digging each pit is Rs. 18, cost of refilling and

planting is Rs. 5 per plant and cost of fertilizers is Rs. 6 per

plant. 3

4. (A) State fertilizer dose recommended for full grown coconut palm. 1

(B) What is sheet/flake test in jam preparation ? What is its significance ? 2

(C) Explain harvesting and post-harvest drying of Nutmeg fruits. 2

(D) (i) What is the importance of cushioning in packing of fruits ? State

two examples of cushioning materials. 2

(ii) Explain importance and scope of post-harvest technology in Indian

context. 3

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5. (A) State the principle behind working of refrigeration chamber. 1

(B) What is aerobic fermentation ? Give two examples of fermented

products. 2

(C) State four advantages of use of corrugated fibre board boxes. 2

(D) Explain the construction of zero energy cooling chamber for storage of

fruits and vegetables with suitable labelled diagram. 5

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