Louisiana Landscape Horticulture A-M Exams
Newest Update 2025 With Well Elaborated
Questions And Correct Answers
Dividing - CORRECT ANSWER A method for increasing plants such as bulbs,
perennials, and other plants that spread by developing roots and tops in clumps (e.g.
dahlias, iris, day lilies). Accomplished by digging up all or a portion of a plant, breaking
apart the rooted sections and replanting.
Dormancy - CORRECT ANSWER Cyclic period when a plant rests; its growth
processes is greatly slowed down. This occurs in many species by the coming of winter
as days grow shorter and temperatures begin to drop. The period ends in spring when
the plant is exposed to higher temperatures for an extended number of hours.
Dormancy is a plant's safeguard against extremes of temperature, lack of water, etc.
Drainage - CORRECT ANSWER A term used to describe how water passes through
the soil. Adequate water passage is essential to the proper growth of almost all plants.
Drainage (Air) - CORRECT ANSWER A term used to describe the circulation of air into
the soil and the flow of respiration product out the soil. Compacted soil around roots
resist air flow, making it difficult for many plants to thrive. Also refers to movement of air
from adjacent areas to affect temperature changes.
Drip Irrigation - CORRECT ANSWER A system of water at points on or just below the
soil surface so that only the immediate areas around the roots are moistened. The
irrigation should be made with a very low water pressure over a long period of time to
supply plants with only the amount of moisture needed to replace the plant's moisture
less.
Drip Line - CORRECT ANSWER 1) A line drawn around a tree directly under the
outermost ends of its branches. Term is used in connection with watering and fertilizing
trees. 2) The point at which rain drops off a roof.
Dwarf - CORRECT ANSWER A normally large plant genetically cultivated for shorter
and more compact growth.
Espalier - CORRECT ANSWER A plant trained to grow flat against a surface such as a
wall or trellis.
Ethylene - CORRECT ANSWER A growth regulator which has various effects on plants.
Example: promoting bromeliads to flowers, increasing uniformity of ripening some fruits,
and damaging petals of cut flowers such as roses and carnations.
, Ever blooming - CORRECT ANSWER Plants that bloom intermittently during the entire
growing season.
Evergreen - CORRECT ANSWER A plant which does not lose all its leaves at one time.
Acid Soil - CORRECT ANSWER Soil with a pH of less than 7.0. Agricultural lime is used
to raise the pH and correct a very acid soil condition.
Acre - CORRECT ANSWER A land containing 43,560 square feet and measuring
approximately 210' x 210' square
Actual - CORRECT ANSWER The part of the formula of any product, containing several
ingredients, which refers to a specific ingredient. For example, a 5-pound box of a
general purpose plant food (10-10-10) would have 10% nitrogen, 10% phosphate and
10% potassium. 10% of 5lbs is 1/2lb. Therefore, the actual content of the three major
ingredients in the mixture is 1/2 lb. each.
Adventitious Root or Shoot - CORRECT ANSWER Produced on stem tissue after
removal from the mother plant. These tissues developed on cuttings are identical to
those found during seedling development.
Alkaline Soil - CORRECT ANSWER Soil with a pH of more than 7.0. The pH of Alkaline
soils is reduced by the application of iron sulfate, aluminum or large amounts of
sawdust, peat moss, or ground pine bark.
Annual Plant - CORRECT ANSWER A plant living one year or less, usually planted in
spring after the last frost and dying at time of killing frost. During this time, the plant
grows, blooms, produces seeds and dies.
Anther - CORRECT ANSWER The upper part of a stamen that produces pollen.
Apical Dominance - CORRECT ANSWER The suppression of growth of lateral buds by
the terminal bud of a stem.
Arboretum - CORRECT Answering area devoted to the display of a variety of living
trees and shrubs for study and comparison.
Asexual - CORRECT ANSWER Without sex; refers to reproduction not involving the
fusion of gametes.
Auxin - CORRECT ANSWER A plant hormone that influences and regulates plant
growth.
Balled and Bur lapped - CORRECT ANSWER Plant prepared for transplanting by
digging them so that the soil adjacent to the roots remains undisturbed; the ball of earth
is then wrapped in burlap or similar mesh fabric.
Newest Update 2025 With Well Elaborated
Questions And Correct Answers
Dividing - CORRECT ANSWER A method for increasing plants such as bulbs,
perennials, and other plants that spread by developing roots and tops in clumps (e.g.
dahlias, iris, day lilies). Accomplished by digging up all or a portion of a plant, breaking
apart the rooted sections and replanting.
Dormancy - CORRECT ANSWER Cyclic period when a plant rests; its growth
processes is greatly slowed down. This occurs in many species by the coming of winter
as days grow shorter and temperatures begin to drop. The period ends in spring when
the plant is exposed to higher temperatures for an extended number of hours.
Dormancy is a plant's safeguard against extremes of temperature, lack of water, etc.
Drainage - CORRECT ANSWER A term used to describe how water passes through
the soil. Adequate water passage is essential to the proper growth of almost all plants.
Drainage (Air) - CORRECT ANSWER A term used to describe the circulation of air into
the soil and the flow of respiration product out the soil. Compacted soil around roots
resist air flow, making it difficult for many plants to thrive. Also refers to movement of air
from adjacent areas to affect temperature changes.
Drip Irrigation - CORRECT ANSWER A system of water at points on or just below the
soil surface so that only the immediate areas around the roots are moistened. The
irrigation should be made with a very low water pressure over a long period of time to
supply plants with only the amount of moisture needed to replace the plant's moisture
less.
Drip Line - CORRECT ANSWER 1) A line drawn around a tree directly under the
outermost ends of its branches. Term is used in connection with watering and fertilizing
trees. 2) The point at which rain drops off a roof.
Dwarf - CORRECT ANSWER A normally large plant genetically cultivated for shorter
and more compact growth.
Espalier - CORRECT ANSWER A plant trained to grow flat against a surface such as a
wall or trellis.
Ethylene - CORRECT ANSWER A growth regulator which has various effects on plants.
Example: promoting bromeliads to flowers, increasing uniformity of ripening some fruits,
and damaging petals of cut flowers such as roses and carnations.
, Ever blooming - CORRECT ANSWER Plants that bloom intermittently during the entire
growing season.
Evergreen - CORRECT ANSWER A plant which does not lose all its leaves at one time.
Acid Soil - CORRECT ANSWER Soil with a pH of less than 7.0. Agricultural lime is used
to raise the pH and correct a very acid soil condition.
Acre - CORRECT ANSWER A land containing 43,560 square feet and measuring
approximately 210' x 210' square
Actual - CORRECT ANSWER The part of the formula of any product, containing several
ingredients, which refers to a specific ingredient. For example, a 5-pound box of a
general purpose plant food (10-10-10) would have 10% nitrogen, 10% phosphate and
10% potassium. 10% of 5lbs is 1/2lb. Therefore, the actual content of the three major
ingredients in the mixture is 1/2 lb. each.
Adventitious Root or Shoot - CORRECT ANSWER Produced on stem tissue after
removal from the mother plant. These tissues developed on cuttings are identical to
those found during seedling development.
Alkaline Soil - CORRECT ANSWER Soil with a pH of more than 7.0. The pH of Alkaline
soils is reduced by the application of iron sulfate, aluminum or large amounts of
sawdust, peat moss, or ground pine bark.
Annual Plant - CORRECT ANSWER A plant living one year or less, usually planted in
spring after the last frost and dying at time of killing frost. During this time, the plant
grows, blooms, produces seeds and dies.
Anther - CORRECT ANSWER The upper part of a stamen that produces pollen.
Apical Dominance - CORRECT ANSWER The suppression of growth of lateral buds by
the terminal bud of a stem.
Arboretum - CORRECT Answering area devoted to the display of a variety of living
trees and shrubs for study and comparison.
Asexual - CORRECT ANSWER Without sex; refers to reproduction not involving the
fusion of gametes.
Auxin - CORRECT ANSWER A plant hormone that influences and regulates plant
growth.
Balled and Bur lapped - CORRECT ANSWER Plant prepared for transplanting by
digging them so that the soil adjacent to the roots remains undisturbed; the ball of earth
is then wrapped in burlap or similar mesh fabric.
