LOUISIANA HORTICULTURE TEST QUICK STUDY
GUIDE ACTUAL 2025/2026 QUESTIONS AND CORRECT
ANSWERS
Most warm season plant seeds need this minimum temperature to germinate: - Correct
answer✔✔✔✔greater than 49 degrees F
This zone has an average minimum temperature of 20-25 degrees F: - Correct answer✔✔✔✔9a
The optimum temperature suitable for growth of temperate plants is: - Correct answer✔✔✔✔77-
95 degrees f
Plants exposed to calm, clear nights can give off enough heat to lower their temperature below freezing
even though the surrounding air is 32 degrees F. This kind of freezing is called _________. - Correct
answer✔✔✔✔radiation
Avoiding practices such as late pruning and late fertilization with nitrogen will help to prevent: - Correct
answer✔✔✔✔cold weather damage
Hot weather effects on plants grown in dark containers usually result in: - Correct
answer✔✔✔✔stunted growth on the side exposed to the sun
Nurseries' greatest challenges are providing plants that: - Correct answer✔✔✔✔grow well in their
area
The mud-pie test is used: - Correct answer✔✔✔✔to determined the moisture content of the soil
The two forces that hold water in the soil are _________ and _________. - Correct
answer✔✔✔✔adhesion and cohesion
Autumn color in plants result in changes in the _________. - Correct answer✔✔✔✔photoperiod
,Soil is a mixture of minerals, organic matter, and _________. - Correct answer✔✔✔✔living
organisms
Soils vary in texture, structure, and mineral _________. - Correct answer✔✔✔✔composition
Soil texture is classified as ________, ________, and _______. - Correct answer✔✔✔✔sand, silt and
clay
When inspecting shipments of nursery plants you should examine for pests, insects, disease, and
__________. - Correct answer✔✔✔✔weeds
A soil sample with a pH value of 4.0 is considered to be ____________. - Correct
answer✔✔✔✔acidic
A soil sample with a pH value of 7.0 is considered to be _____________. - Correct
answer✔✔✔✔neutral
Two plants that prefer more acidic soil are ________ and _________. - Correct
answer✔✔✔✔azaleas and camellias
Soil pH is a factor that controls plant growth, but is a good indicator of ________________ - Correct
answer✔✔✔✔what materials are soluble in that soil
Miscellaneous organic soil additives include sawdust, leaf mold, straw, rice hulls, animal manures, pine
bark, peat moss, and ___________. - Correct answer✔✔✔✔bagasse
A problem with using some miscellaneous soil additives is that straw, fresh sawdust, and rice hulls need
added ____________. - Correct answer✔✔✔✔nitrogen
Sawdust from pressure treated wood contains __________ and should not be used as an organic additive.
- Correct answer✔✔✔✔toxic residues
,When storing plant seeds, ___________ have fairly good temperatures, but are usually too damp. -
Correct answer✔✔✔✔refrigerators
_____ and _____ are the two most critical requirements for successful seed germination. - Correct
answer✔✔✔✔Water and temperature
Water affects the _________ supply around the seed. - Correct answer✔✔✔✔oxygen
Commercial growers scarify, or __________, hard seed coats mechanically or with concentrated solfuric
acid. - Correct answer✔✔✔✔scratch
Layering, division, and separation are all methods of __________ propagation. - Correct
answer✔✔✔✔asexual
Most cuttings need a _________ atmosphere, warm soil temperatures, light, and a moist but well drained
rooting medium. - Correct answer✔✔✔✔humid
Some plants are now being commercially propagated using __________ techniques that involve the
production of new plants from tissue culture. - Correct answer✔✔✔✔micropropagation
When accepting an order and i specting shipments od plants, which of the following basic steps should be
followed?
a. confirm all order
b. determine if the order contains quality materials
c. examine for pests, insects, disease, and weeds - Correct answer✔✔✔✔all of these
A plant's scientific name of a plant is composed of _________ and _________. - Correct
answer✔✔✔✔genus and species
Alba is a term that describes a plant as _________. - Correct answer✔✔✔✔white
, Triacanthos describes a plant that is _________. - Correct answer✔✔✔✔three spined
The functions of the root system are: - Correct answer✔✔✔✔anchorage, absorption, conduction
and
storage
The tap root could be described as: - Correct answer✔✔✔✔a fleshy food storing organ
When a person is preparing to transplant a plant: - Correct answer✔✔✔✔expose the roots to little
air as possible
Plants that are root bound in their containers should: - Correct answer✔✔✔✔coiled roots should
be straightened and pruned
The xylem is resonsible for: - Correct answer✔✔✔✔transporting water and minerals from the roots
upward through the plant
An example of a monocot plant would be _________. - Correct answer✔✔✔✔corn
If the cambium layer and vascular bundles are damaged: - Correct answer✔✔✔✔the plant could
die
Girdling of a plant can be described as: - Correct answer✔✔✔✔damage to the plants food supply
pipeline
A node is considered to be: - Correct answer✔✔✔✔an area on a stem where the leaves emerge
Tulips develop each spring from _________. - Correct answer✔✔✔✔bulbs
GUIDE ACTUAL 2025/2026 QUESTIONS AND CORRECT
ANSWERS
Most warm season plant seeds need this minimum temperature to germinate: - Correct
answer✔✔✔✔greater than 49 degrees F
This zone has an average minimum temperature of 20-25 degrees F: - Correct answer✔✔✔✔9a
The optimum temperature suitable for growth of temperate plants is: - Correct answer✔✔✔✔77-
95 degrees f
Plants exposed to calm, clear nights can give off enough heat to lower their temperature below freezing
even though the surrounding air is 32 degrees F. This kind of freezing is called _________. - Correct
answer✔✔✔✔radiation
Avoiding practices such as late pruning and late fertilization with nitrogen will help to prevent: - Correct
answer✔✔✔✔cold weather damage
Hot weather effects on plants grown in dark containers usually result in: - Correct
answer✔✔✔✔stunted growth on the side exposed to the sun
Nurseries' greatest challenges are providing plants that: - Correct answer✔✔✔✔grow well in their
area
The mud-pie test is used: - Correct answer✔✔✔✔to determined the moisture content of the soil
The two forces that hold water in the soil are _________ and _________. - Correct
answer✔✔✔✔adhesion and cohesion
Autumn color in plants result in changes in the _________. - Correct answer✔✔✔✔photoperiod
,Soil is a mixture of minerals, organic matter, and _________. - Correct answer✔✔✔✔living
organisms
Soils vary in texture, structure, and mineral _________. - Correct answer✔✔✔✔composition
Soil texture is classified as ________, ________, and _______. - Correct answer✔✔✔✔sand, silt and
clay
When inspecting shipments of nursery plants you should examine for pests, insects, disease, and
__________. - Correct answer✔✔✔✔weeds
A soil sample with a pH value of 4.0 is considered to be ____________. - Correct
answer✔✔✔✔acidic
A soil sample with a pH value of 7.0 is considered to be _____________. - Correct
answer✔✔✔✔neutral
Two plants that prefer more acidic soil are ________ and _________. - Correct
answer✔✔✔✔azaleas and camellias
Soil pH is a factor that controls plant growth, but is a good indicator of ________________ - Correct
answer✔✔✔✔what materials are soluble in that soil
Miscellaneous organic soil additives include sawdust, leaf mold, straw, rice hulls, animal manures, pine
bark, peat moss, and ___________. - Correct answer✔✔✔✔bagasse
A problem with using some miscellaneous soil additives is that straw, fresh sawdust, and rice hulls need
added ____________. - Correct answer✔✔✔✔nitrogen
Sawdust from pressure treated wood contains __________ and should not be used as an organic additive.
- Correct answer✔✔✔✔toxic residues
,When storing plant seeds, ___________ have fairly good temperatures, but are usually too damp. -
Correct answer✔✔✔✔refrigerators
_____ and _____ are the two most critical requirements for successful seed germination. - Correct
answer✔✔✔✔Water and temperature
Water affects the _________ supply around the seed. - Correct answer✔✔✔✔oxygen
Commercial growers scarify, or __________, hard seed coats mechanically or with concentrated solfuric
acid. - Correct answer✔✔✔✔scratch
Layering, division, and separation are all methods of __________ propagation. - Correct
answer✔✔✔✔asexual
Most cuttings need a _________ atmosphere, warm soil temperatures, light, and a moist but well drained
rooting medium. - Correct answer✔✔✔✔humid
Some plants are now being commercially propagated using __________ techniques that involve the
production of new plants from tissue culture. - Correct answer✔✔✔✔micropropagation
When accepting an order and i specting shipments od plants, which of the following basic steps should be
followed?
a. confirm all order
b. determine if the order contains quality materials
c. examine for pests, insects, disease, and weeds - Correct answer✔✔✔✔all of these
A plant's scientific name of a plant is composed of _________ and _________. - Correct
answer✔✔✔✔genus and species
Alba is a term that describes a plant as _________. - Correct answer✔✔✔✔white
, Triacanthos describes a plant that is _________. - Correct answer✔✔✔✔three spined
The functions of the root system are: - Correct answer✔✔✔✔anchorage, absorption, conduction
and
storage
The tap root could be described as: - Correct answer✔✔✔✔a fleshy food storing organ
When a person is preparing to transplant a plant: - Correct answer✔✔✔✔expose the roots to little
air as possible
Plants that are root bound in their containers should: - Correct answer✔✔✔✔coiled roots should
be straightened and pruned
The xylem is resonsible for: - Correct answer✔✔✔✔transporting water and minerals from the roots
upward through the plant
An example of a monocot plant would be _________. - Correct answer✔✔✔✔corn
If the cambium layer and vascular bundles are damaged: - Correct answer✔✔✔✔the plant could
die
Girdling of a plant can be described as: - Correct answer✔✔✔✔damage to the plants food supply
pipeline
A node is considered to be: - Correct answer✔✔✔✔an area on a stem where the leaves emerge
Tulips develop each spring from _________. - Correct answer✔✔✔✔bulbs
