HORTICULTURE
Gypsum can change soil pH and it is most effective in improving soil structure in sodic soils (high in sodium) because it replaces and removes sodium from the soil.
False
Materials used when lowering soil pH include sulfur, lime and iron sulfate.
False
Plant growth is the result of many naturally occurring chemicals in the soil.
False
Subsoil contains the most organic matter.
False
The beauty of a flower does nothing to attract insects.
False
The process of photosynthesis has recently been duplicated by humans and is no longer a challenge for researchers to examine.
False
The temperature of the air has one of the weakest affects on plant growth.
False
Water movement in plants is pushed up by the roots.
False
The use of biostimulants reduces the need for _____.
Nitrogen
______ are the joints at which buds, leaves and branches grow out from the stem.
Nodes
The genus name of a plant is usually a (an) _______
Noun
The generic name of Papaver is _____
Poppy, Papavera
Plants play an essential role in ___.
Producing Oxygen, producing food, slowing down the wind.
A plant's "clock" is located in the _______ of plant cells. The clock controls the enzyme that modifies a protein necessary for photosynthesis as the day starts and light energy is available.
Nucleus
To aid in moisture retention, _____ matter is added to the soil because it holds many times its own weight in water.
Organic
The leaf stalk is known as the ___________.
Peticole
What is the opposite of photosynthesis?
Respiration (Cellular Respiration)
Which part of the root absorbs the moisture and minerals?
Root hairs
Scientists have discovered that _____ acid is produced by plants when attacked by a disease organism.
Salicylic
What design elements can be used to develop outdoor walls?
Shrubs, fences,trellises
The aster family includes the _______ genera.
Silvermound, Artemesia
Allelopathy is the production of a chemical compound by one plant the _______ another plant.
Slows down or stops the growth of (another plant)
Microphylla are known as ____ plants.
Small leaf, microphylla
_____ may be used to determine the name of the soil by mechanical analysis, actually measuring the percentages of sand, silt and clay present in the soil.
Soil texture triangle
What structure on the underside of leaves allows the leaf to breathe or transpire?
Stoma
From 90 % to 95% of the water lost from a plant is lost by transpiration through _______ in the leaves.
Stomata
The scientists who identify and classify plants are known as_____.
Taxonomist
On which plant is chemical blossom used?
Tomatoes
A 3-D approach to landscape design allows clients to see a photographic image of the landscape design.
True
A plant's biological "clock" controls an enzyme that modifies a protein necessary for photosynthesis as a day starts and light energy is available.
True
Biostimulants are natural products.
True
Biostimulants stimulate microbial activity and improve soils cation exchange capacity.
True
Carbon monoxide can reduce plant growth.
True
Computers and mechanized equipment are used by today's landscape architects in conjunction with the design process.
True
Directly or indirectly, plants are the primary source of food for humans.
True
During landscape analysis, the landscape architect should investigate the quality of topsoil and subsoil and the condition of lawn areas.
True
Graphic art can reduce the actual dimensions of the area to be landscaped to a size that can be illustrated for the client in a drawing.
True
Ground covers are good for surfacing areas where no one will be walking, such as slopes and under trees.
True
Meiosis is the reproductive cell division that results in the formation of gametes (sex cells).
True
Pinching out the terminal leaf bud of a shoot nullifies the effect on axillary buds.
True
Plant cells are made of protoplasmic material with a nucleus and a cell wall.
True
Plants are in constant motion.
True
Plants have natural sun blocker compounds called flavonoids in their leaves.
True
Rubber liners last longer than PVC liners.
True
The chemical blossom set causes seedless fruit to set on blossoms and results in tomatoes ready to eat as much as ten days earlier than normal .
True
The goal of residential landscaping is to determine the capabilities of the land area and the needs and desires of the homeowners.
True
The plant medium must be evaluated in terms of soil pH.
True
The release of water vapor from living plants is transpiration.
True
They are indifferent to the African violet and the tomato plants.
True
Turf areas should be separated from other plantings and irrigated separately.
True
Xeriscaping is used primarily for water conservation.
True
_______ exists when the terminal bud secretes chemicals that inhibit or prevent the growth of axillary buds on the same shoot.
Apical dominance
Cytoplasm is the gas that gives the plant cell inside the cell wall it's shape.
False
Betula alba is a type of birch, alba means _____'
"Alba" means white
Cytokinins will not work without ____.
Auxins
As the cost of labor decreased, orchardists began looking for larger fruit trees that could produce more fruit.
False
Centrosome is the liquid that fills the cell and gives the cell wall it's shape.
False
What approach to landscaping design has opened up a whole new type of presentation?
3-D
How many hours of full sun do most plants need to flower well?
6 hours
What percentage of a plant's fresh weight is water?
70 to 90%
What does a landscape architect use to determine the capabilities of a site?
A site analysis
Organic matter improves soil structure through _____.
Aggregation
What common animal feed crop contains a natural growth stimulant?
Alfalfa
What prevents rotting of the cutting?
Captan
The binomial system of naming plants was developed by a famous Swedish botanist, __________.
Carolus Linnaeus
If a plant is allowed to reach the extreme wilting stage, _____ occurs.
Death
A plant with male and female flowers on separate plants is called _____
Dioecious
. One casualty of America's agricultural revolution and the use of chemicals is the loss of native soil algae, which allow plants to grow with less water, fewer added nutrients, and fewer pesticides.
False
A complete series of rootstock known as the malling rootstock was developed in France.
False
Allelopathy is a man-made growth regulating chemical that was produced in 1987.
False
Apical is a systemic (a material that penetrates the plant, enters the plant sap, and moves through the plant) that works by blocking the plant hormones that stimulate growth.
False
"Xeriscape" comes from the Latin word Xero for "dry" and scapes for "dryscape"
False, Greek prefix "xero" meaning dry and landscape.
Related genera (plural of genus) with similar flower structures are grouped together into major units known as _______ ( such as roses).
Families
What does gibberellic acid enable plants to do?
Grow taller
When droplets form on a plant's leaf, this is called _____
Guttation
Growth regulating substances in plants are called ______
Hormones
The chemical most commonly used today for rooting cuttings is _____.
Indolebutyric acid
A profession that integrates art and science and considers how plants and elements of landscapes will react to the environment is _____.
Landscape architect
Which career field deals primarily with installation of landscapes?
Landscape contracting
After a landscape has been installed, whose job is it to care for it?
Landscape maintenance contractor
Landscape maintenance typically includes what services?
Lawn care, tree care, flower care
Small openings in the stem of the plant that allow gases to exchange are called_____.
Lenticels
The external stem structure contains_______
Lenticels
Sandy soil consists of _____.
Less than 20% slit and clay
______ seems to work by blocking photorespiration.
Methanol
The ______ is the large center vein from which all other leaf veins extend.
Midrib
A plant that has only one cotyledon is called____
Monocot
Plants are referred to as _____ because they have only one cotyledon.
Monocots
Today's plants are_____'
More resistant to diseases
What is the most popular surface for an outdoor "floor"?
Turfgrass
What is the master principle of landscape design?
Unity
Mulching can reduce water lost by runoff and evaporation by what percent?
Up to 90%
During cellular respiration, plants_____
Use Oxygen
Today, chemical retardants are used commercially as a (an) ______ part of the growing process of many plants.
Usual
With xeriscaping, plants are grouped according to their need for what resource?
Water
Leaves that encircle the plant are known as ______.
Whorled
If green plants show a ______ color, this indicates a nitrogen deficiency.
Yellow
Plants with two seed leaves are known as _______.
dicots
Lettuce and radishes are ______ plants.
long day
Chrysanthemum and Christmas cactus are ________ plants.
short day