Expert-Level Horticulture Quiz – Test Your Botanic Knowledge
Challenge yourself with ten rigorous questions covering advanced horticultural practices and theory.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
Which hormone primarily regulates stomatal closure during drought stress?
- 2
In hydroponic systems, the electrical conductivity (EC) of the nutrient solution is measured in which unit?
- 3
Which pruning technique removes entire branches back to the main stem to reduce canopy density?
- 4
The disease caused by Phytophthora infestans that devastated 19th‑century crops is known as?
- 5
In plant breeding, the term 'heterosis' refers to?
- 6
Which soil test parameter most directly indicates the availability of phosphorus to plants?
- 7
For a greenhouse with a vent ventilation rate of 15 air changes per hour, the recommended temperature differential to trigger vent opening is typically about?
- 8
The cultivar 'Honeycrisp' belongs to which fruit species?
- 9
When grafting a scion onto a rootstock, the cambial layers must be aligned within how many millimeters to ensure successful union?
- 10
In integrated pest management, the economic threshold is defined as?
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