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Total no of Pages:
Register Number: 7693
Name of the Candidate:
Diploma ExAMINATION, 2012
(commercial floriculture)
(paper-I)
110. Growth and development of flower crops
Dec.) (Time: 3 Hours
Maximum: 100 Marks
I. Choose the correct answer for any TEN of the following (10×1=10)
- Leaf sampling analysis is done to assess
a) Nutrition b) T.S.S.c) Ascorbic acid
- Pollination can be aided by
a) Auxin b) Cytokinin c) CCC
- Breaking seed dormancy through
a) Ga3b) CCCc) Agno3
- Foliar nutrition can be given for flower crop though ______fertilizer
a) Urea b) Mixed fertilizer c) Superphosphate
- Shelf life of cut flowers can be enhanced by
a) 8 HQCb) CCCc) BA
- Chrysanthemum is ______type of plant.
a)Short day b) Long day c) Day neutral
- French marigold is
a)Annual b) Biennial c) Perennial
- Bud breaking chemical for use as foliar spray.
a) Sandolia b) DNOCc) CCC
- Drought tolerance is indicated by
a) Proline content b) Crude c) Starch
- The percentage of rooting of cuttings can be increased by
a) IBAb) BA c) SADH
- Growth retardant
a) CCCb) SADH c) Ethrel
- Rose belongs to the family
a) Oleaceae b) Rosaceae c) Solamaceae
II. Define any five of the following (5×2=10)
- salinity.
- Rooting cycle of flower crops
- Growth cycle of flower crops
- Shortday plants
- Growth retardents
- Training
- Senescence
- Growth
III. Write an essay on any FIVE of the following (5×4=20)
- Indicator plants
- Biennial
- Growth hormones.
- Flower set
- Flower drop
- Graft incompatibility
- Prumining
- Seed dormancy
iV. Write detailed answer for any five of the following (5×12=60)
- role of heat, cold and continuous moisture in flower crops.
- Physiology of the rooting of cuttings.
- Source-sink relationship using flowers as example-Explain.
- Post-harvest physiology of flower crops
- role of Retardants in flower crops
- Roles of PGR on propagation, flowering, shelf life of flower crops.
- Describe the factors affecting flowering.
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