HORTICULTURE SCIENCE
FLORICULTURE
| Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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 A purlin in greenhouse construction is used for what purpose? 
|  |  Frame components spanning the space between the eave and the ridge 
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|  |  A panel attached to the greenhouse that permits opening for ventilation 
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|  |  A component of the greenhouse frame running the length of the greenhouse just below the roof covering that connects trusses together. 
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|  |  A component of the greenhouse frame spanning the width of the greenhouse that is welded or bolted together. 
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 Explanation: 
Detailed explanation-1: -1.3.1.1 Lean-to type greenhouse A lean-to design is used when a greenhouse is placed against the side of an existing building.
Detailed explanation-2: -Polythenes or other transparent material used for walls and roof of a greenhouse for protection as well as transparency, which simulates climatic conditions inside the greenhouse is called cladding material.
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