Which of the following is an example of old horticulture technology?

• A. Orangerie
• B. Tangennery
• C. Greenhouse
• D. Conservatory

Answer: (A)

Old horticulture technology is about historic structures created to protect or grow plants in a controlled microclimate, especially during colder periods. An orangerie fits this idea perfectly because it was built specifically to house orange trees and other delicate plants through winter. These buildings, common on European estates in the 17th and 18th centuries, used thick walls, ample glazing, and sometimes heating to extend the growing season for citrus and other species before modern heated greenhouses. That makes it a classic example of early plant-housing technology.

Greenhouses and conservatories are also structures for growing or housing plants, but they became widespread later as glass-making and heating methods improved, so they represent more modern developments in horticulture. The term tangennery isn’t a standard historical term for a horticultural structure, so it doesn’t fit as a classic example of old horticulture technology.