Louisiana Horticulture License Review
Questions and Answers 100% Pass
A plant's scientific name of a plant is composed of _________ and _________. -
✔✔genus and species
Alba is a term that describes a plant as _________. - ✔✔white
Triacanthos describes a plant that is _________. - ✔✔three spined
The functions of the root system are: - ✔✔anchorage, absorption, conduction and
storage
The tap root could be described as: - ✔✔a fleshy food storing organ
When a person is preparing to transplant a plant: - ✔✔expose the roots to little air as
possible
Plants that are root bound in their containers should: - ✔✔coiled roots should be
straightened and pruned
The xylem is resonsible for: - ✔✔transporting water and minerals from the roots
upward through the plant
Katelyn Whitman, All Rights Reserved © 2025 1
,An example of a monocot plant would be _________. - ✔✔corn
If the cambium layer and vascular bundles are damaged: - ✔✔the plant could die
Girdling of a plant can be described as: - ✔✔damage to the plants food supply pipeline
A node is considered to be: - ✔✔an area on a stem where the leaves emerge
Tulips develop each spring from _________. - ✔✔bulbs
A plant that developes from rhizome would be _________. - ✔✔cannas
Potatoes are propogated from _________. - ✔✔tubers
When a plant a "suckers" it means that a new shoot will develops from the _________. -
✔✔roots
In Louisiana, spring flowerihg bulbs are usually planted from _________ to _________. -
✔✔October to December
Amaryllis bulbs are usually planted _________. - ✔✔during fall
The term "venation" is a term used to describe a plants _________. - ✔✔vein distribution
A leaf gives off water into the atmosphere through a process called _________. -
✔✔transpiration
If transpiration is more rapid than absorption in a plant: - ✔✔the plant will show signs
of wilting
Katelyn Whitman, All Rights Reserved © 2025 2
,Transpiration in a plant depends on: - ✔✔water pressure should be lower in the top of
the plant
The pistil is the: - ✔✔female part of the plant
Ferns reproduce from single cell structures called _________. - ✔✔spores
The highest priority of food produced by leaves is to feed _________. - ✔✔flowers
A primary element used for plant growth would be _________. - ✔✔urea
Overall yellowing of the plant beginning at the bottom of the plant could mean
_________. - ✔✔nitrogen deficiency
Spindly growth, low flower and fruit production, dark green leaves with reddish
overcast could mean _________. - ✔✔phosphorous deficiency
Slow growth, scorched leaves and shriveled fruit on a plant could mean _________. -
✔✔potassium deficiency
Light green leaves with leaf margins turning upward are symptoms of _________. -
✔✔calcium deficiency
A 50 poind bag of 13-13-13 would contain how many pounds of nitrogen? - ✔✔6.5
A 50 pound bag of 20-15-10 would contain how many pounds of phosphorus? - ✔✔7.5
Katelyn Whitman, All Rights Reserved © 2025 3
, Resin coated materials, such as osmocote, fertilize depends on what factor to release
nutrients: - ✔✔soil moisture
Fertilizing in early or late fall: - ✔✔is a poor practice because it could cause cold
damage
Exposing plants to low light intensity will: - ✔✔limit photosynthesis
Roots dying from over watering could be caused by _________. - ✔✔lack of oxygen
Water softeners should never be used for irrigation because the _________ may replace
essential nutrients causing deficiencies. - ✔✔(Na) ions
Due to slow permeability of clay, how many inches of water must be used on a plant
with an 18" root depth? - ✔✔3 inches
The field capacity for water in loamy soil is approximately _________. - ✔✔15-25%
Which side of a building has the coolest growing temperature? - ✔✔north
Most warm season plant seeds need this minimum temperature to germinate: -
✔✔greater than 49 degrees F
This zone has an average minimum temperature of 20-25 degrees F: - ✔✔9a
Katelyn Whitman, All Rights Reserved © 2025 4
Questions and Answers 100% Pass
A plant's scientific name of a plant is composed of _________ and _________. -
✔✔genus and species
Alba is a term that describes a plant as _________. - ✔✔white
Triacanthos describes a plant that is _________. - ✔✔three spined
The functions of the root system are: - ✔✔anchorage, absorption, conduction and
storage
The tap root could be described as: - ✔✔a fleshy food storing organ
When a person is preparing to transplant a plant: - ✔✔expose the roots to little air as
possible
Plants that are root bound in their containers should: - ✔✔coiled roots should be
straightened and pruned
The xylem is resonsible for: - ✔✔transporting water and minerals from the roots
upward through the plant
Katelyn Whitman, All Rights Reserved © 2025 1
,An example of a monocot plant would be _________. - ✔✔corn
If the cambium layer and vascular bundles are damaged: - ✔✔the plant could die
Girdling of a plant can be described as: - ✔✔damage to the plants food supply pipeline
A node is considered to be: - ✔✔an area on a stem where the leaves emerge
Tulips develop each spring from _________. - ✔✔bulbs
A plant that developes from rhizome would be _________. - ✔✔cannas
Potatoes are propogated from _________. - ✔✔tubers
When a plant a "suckers" it means that a new shoot will develops from the _________. -
✔✔roots
In Louisiana, spring flowerihg bulbs are usually planted from _________ to _________. -
✔✔October to December
Amaryllis bulbs are usually planted _________. - ✔✔during fall
The term "venation" is a term used to describe a plants _________. - ✔✔vein distribution
A leaf gives off water into the atmosphere through a process called _________. -
✔✔transpiration
If transpiration is more rapid than absorption in a plant: - ✔✔the plant will show signs
of wilting
Katelyn Whitman, All Rights Reserved © 2025 2
,Transpiration in a plant depends on: - ✔✔water pressure should be lower in the top of
the plant
The pistil is the: - ✔✔female part of the plant
Ferns reproduce from single cell structures called _________. - ✔✔spores
The highest priority of food produced by leaves is to feed _________. - ✔✔flowers
A primary element used for plant growth would be _________. - ✔✔urea
Overall yellowing of the plant beginning at the bottom of the plant could mean
_________. - ✔✔nitrogen deficiency
Spindly growth, low flower and fruit production, dark green leaves with reddish
overcast could mean _________. - ✔✔phosphorous deficiency
Slow growth, scorched leaves and shriveled fruit on a plant could mean _________. -
✔✔potassium deficiency
Light green leaves with leaf margins turning upward are symptoms of _________. -
✔✔calcium deficiency
A 50 poind bag of 13-13-13 would contain how many pounds of nitrogen? - ✔✔6.5
A 50 pound bag of 20-15-10 would contain how many pounds of phosphorus? - ✔✔7.5
Katelyn Whitman, All Rights Reserved © 2025 3
, Resin coated materials, such as osmocote, fertilize depends on what factor to release
nutrients: - ✔✔soil moisture
Fertilizing in early or late fall: - ✔✔is a poor practice because it could cause cold
damage
Exposing plants to low light intensity will: - ✔✔limit photosynthesis
Roots dying from over watering could be caused by _________. - ✔✔lack of oxygen
Water softeners should never be used for irrigation because the _________ may replace
essential nutrients causing deficiencies. - ✔✔(Na) ions
Due to slow permeability of clay, how many inches of water must be used on a plant
with an 18" root depth? - ✔✔3 inches
The field capacity for water in loamy soil is approximately _________. - ✔✔15-25%
Which side of a building has the coolest growing temperature? - ✔✔north
Most warm season plant seeds need this minimum temperature to germinate: -
✔✔greater than 49 degrees F
This zone has an average minimum temperature of 20-25 degrees F: - ✔✔9a
Katelyn Whitman, All Rights Reserved © 2025 4
