( 1 ) T(6th Sm.)-Botany-G/DSE-B-3/CBCS

2021

BOTANY — GENERALPaper : DSE-B-3

(Economic Botany)

Full Marks : 50

Candidates are required to give their answers in their own wordsas far as practicable.

Cruciferae (Brassicaceae)

Vigna

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( 2 )T(6th Sm.)-Botany-G/DSE-B-3/CBCS

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[ English Version ]

The figures in the margin indicate full marks.1. Answer any five questions : 2×5

(a) Give scientific name of two vegetables of the family of Cruciferae (Brassicaceae).

(b) Mention the morphological nature of edible parts of mango and apple.

(c) Differentiate between green tea and black tea.

(d) Write the scientific names of two timber yielding plants.

(e) Give the scientific name and family of plant from which alkaloid vasicin is obtained.

(f) Write the scientific names of one medicinal plant and one beverage-yeilding plant from the familyRubiaceae.

(g) Write the scientific name and usable parts of wheat.

(h) Write the botanical name of two common pulses.

2. Answer any two questions :

(a) Write the economic importance of legumes with examples. 5

(b) Write a brief note on the various steps of tea processing. 5

(c) Describe the morphology of rice plant with suitable sketch. 3+2

3. Answer any three questions :

(a) Give a detailed account of centre of origin of cultivated plants with reference to Vavilov’s workand state its importance. 8+2

(b) Briefly explain how the cultivation of rice crop was originated. Mention the uses of rice. 5+5

(c) Name four economically important species of Vigna, alongwith their common name. Write downtheir respective economic importance. 4+6

(d) Write the scientific names, families and usable part(s) of two spice-yielding and two oil-yieldingplants. (2½×2)+(2½×2)

(e) Give the scientific names, families, parts used and uses of the following : (1+1+1+2)×2

(i) Cinchona

(ii) Sal.

( 1 ) T(6th Sm.)-Botany-G/DSE-B-4/CBCS

2021

BOTANY — GENERALPaper : DSE-B-4

(Horticultural Practices and Post Harvest Technology)

Full Marks : 50

Candidates are required to give their answers in their own wordsas far as practicable.

‘Coral Tree’

(manure)

C

(succulents)

Pest

Propagation methods

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( 2 )T(6th Sm.)-Botany-G/DSE-B-4/CBCS

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Processing ×

PGR

Common biopesticides

Post harvest technology

[ English Version ]

The figures in the margin indicate full marks.

1. Answer any five in brief : 2×5

(a) What do you mean by ornamental plants?

(b) Mention the scientific name and family of the ornamental plant ‘Coral Tree’.

(c) Write the scientific name of Banana.

(d) State the role of manure in horticultural techniques.

(e) Write the names of two Vitamin C rich fruits.

(f) What do you mean by succulents?

(g) What is pinching?

(h) Give an example of a common disease and associated pest in any one fruit.

( 3 ) T(6th Sm.)-Botany-G/DSE-B-4/CBCS

2. Write short notes on (any two) : 5×2

(a) Importance of urban horticulture 5

(b) Propagation methods commonly used in horticultural techniques. 5

(c) What are weeds? Discuss the different methods of weed control. 1+4

(d) Harvesting and handling of fruits and vegetables. 5

3. Answer any three questions : 10×3

(a) State the role of horticulture in rural economy and employment generation. 5+5

(b) Give the scientific names and two salient features of each of the following :

(i) Marigold

(ii) Tuberose

(iii) Carnations

(iv) Shimul

(v) Gulmohor. (1+½+½)×5

(c) Write the identifying characters of following fruits and vegetables.

(i) Mango

(ii) Jackfruit

(iii) Papaya

(iv) Cucurbits.

Mention the benefits of fruit processing. (2×4)+2

(d) Discuss the following :

(i) Application of PGR in horticulture.

(ii) How biofertilizers and biopesticides are helpful for cultivation of common crops? 5+5

(e) Briefly discuss the importance of post harvest technology in horticultural practices. What are themethods commonly used for fruit and vegetable preservation? 5+5

(f) Discuss briefly the different methods of ‘crop sanitation’. Write the names of any two diseases ofeconomically important fruits and vegetables along with the name of pathogen responsible. Whatdo you mean by ‘Quarantine’? 4+(2+2)+2