2023 Test

Front

What causes the stomata on the leaf to open? Options: Darkness, Moisture Availability, Light, Oxygen

Back

Light

Front

The ideal water-to-air ratio in the pores of the soil is

Back

50% air and 50% water

Front

Root growth bio-stimulants do all of the following except: Increase respiration, Improve water uptake, Increase the number of fibrous roots, Improve nutrient uptake

Back

Increase respiration

Front

In floral design, the three secondary colors are:

Back

orange, green, violet

Front

Which of these lists of flowers are all line flowers? Aster, daffodils, bells of Ireland, peonies; Roses, statice, carnations, sunflowers; Baby’s breath, liatris, sunflowers, roses; Liatris, gladiolus, snapdragons, delphinium

Back

Liatris, gladiolus, snapdragons, delphinium

Front

Ridge and furrow greenhouses by definition, are

Back

greenhouses connected to one another along the length

Front

Most plants grow best at pH of

Back

6.2-6.8

Front

The term used for the response of a plant to the day-night cycle is

Back

Photoperiodism

Front

Which of these LD numbers would be the most toxic pesticide? LD50 number of 855, LD50 number of 51, LD50 number of 411, LD50 number of 126

Back

LD50 number of 51

Front

The process whereby nitrogen is lost from the soil to the atmosphere is called __________________________.

Back

denitrification