2016 National Floral CDE Questions

DIF, used for height management of crops, is the difference between the daytime temperature and

• temperature requirement

• morning temperature

• nighttime temperature

• none of the above

In commercial greenhouses, which of the following methods are commonly used as a way to regulate plant growth without using chemicals?

• crop timing

• water stress

• container size

• all of the above

Agrobacterium tumefaciens is a pathogen that is commonly known as

• crown gall

• flower distortion

• clorotic mottle

• none of the above

The recommended pH level for greenhouse crops in a soilless medium is

• 3.0-3.5

• 4.0-4.3

• 5.6-6.2

• All of the above

The virtual visual path that directs eye movement through a composition is __________.

• pattern

• line

• form

• none of the above

Orange, green and violet are _____________ colors.

• primary

• secondary

• intermediate

• tertiary

The fundamental guidelines to aesthetic design that governs the organization of the elements and materials in accordance with the laws of nature are known as the _________.

• Elements of Design

• Transitions of Design

• Principles of design

• none of the above

Which of the following is NOT a plant hormone that can be used as a plant growth regulator?

• ethylene

• anthocyanin

• abscisic acid

• gibberellin

A 28 gauge florist wire is _____ than 18 gauge florist wire.

• Thicker

• Thinner

• Longer

• Shorter

The LD50 of a pesticide indicates:

• the amount of the pesticide required to kill half of a test population of the test subject

• the time before re-entry into a chemically treated area

• the amount of chemical needed for effective pest control

• none of the above