FFA Career Development+General Knowledge

Auxin is responsible for apical dominance in plants. Auxin is produced in three places in the plant, located in the...

Shoot tips, young leaf blades, and root tips.

Poinsettias require a _____ _____ _____ to produce colored bracts.

Short day period

Cross-pollination occurs when pollen grains from the flowers on one plant transfer to the _____ of the flowers on a different plant.

Stigma

The tiny pores in the epidermis of the leaf through which gas enters and escapes are the _____.

Stomata

When water is not applied frequently enough, plants will wilt and...?

photosynthesis, plant growth, and cell production will be slowed.

_____ are plants characterized by one cotyledon in the seedling stage, flower parts in threes or multiples of three, and parallel leaf venation.

Monocots

Pesticide toxicity is measured in LD50 or LC50 numbers. the lower the number, the _____ toxic it is.

More

The planned area within a floral design, which is devoid of flowers, foliage, or other objects, but is still integral to the design is known as_____ _____.

Negative space

DIF, used for height measurement of crops, is the difference between the daytime temperature and...

Nighttime Temperature

Orange, Green, and Violet are all _____ colors.

Secondary colors

A 28 gauge florist's wire is _____ than 18 gauge florist's wire.

Thinner

The EPA establishes toxicity categories for pesticides based on how soon one can reenter the area after it has been treated. What toxicity level can be reentered immediately after application?

Toxicity 4

The process of a plant losing water through the leaves in the form of water vapor is referred to as _____.

Transpiration

What is the name of Ms. Perry's Dog?

Turkey

this phase begins when a plant's seed germinates and grows, producing leaves, stems, and roots.

Vegative

When propagating asexually, roses can be reproduced from...

Vegetable cuttings, budding plants, and grafted plants.

What does edema in geraniums look like?

Water soaked blisters generally on the underside of the leaf.

The cost of plant materials (i.e. cost of seeds, cuttings, bulbs, or other plant propagules) would be examples of _____ costs on a financial planning sheet.

Direct

A complete fertilizer is recommended for a greenhouse crop. which fertilizer analysis is not a complete fertilizer?

10-0-10

The recommended pH level for greenhouse crops in a soilless medium is...

5.6 to 6.2

Thrips can be effectively managed in the greenhouse by using...

A biological control like "swirski mites", a chemical control such as an insecticide, and screening over vents and other openings.

__________ is not a plant hormone that can be used as a plant growth regulator.

Anthocyanin

Which is not a mass flower?

Baby's breath

What is a disease that doesn't affect the root system of the plant?

Botrytis

Broken, implied, and continuous are all part of which element of floral design?

Line

Plants are divided into C3 and C4 groups. C4 plants are different from C3 plants because...?

C4 plants have a higher relative photosynthesis rate.

Lime furnishes _____, one of the most important of the macro food elements.

Calcium

With the mat irrigation, water moves by _____ _____ from the mat into the root substrate in the pot to maintain constant moisture.

Capillary action

A plant that is genetically identical to the parent plant is known as a...?

Clone

Achromatic, monochromatic, analogous, and complementary are a few of the classically recognized _____ _____.

Color Harmonies

Two hues directly opposite each other on the color wheel are _____ colors.

Complementary

In commercial greenhouses, _____ _____, _____ _____, and _____ _____, are commonly used as a way to regulate plant growth without using chemicals.

Crop timing, water stress, and container size.

Agrobacterium tumefaciens is a pathogen that is commonly known as...

Crown gall

The waxy coating on leaf, called the _____, serves to prevent excessive water loss from the leaf tissues.

Cuticle

The virtual visual path that directs eye movement through a composition is...

Line

The _____ is the food storage tissue in the seed the nourishes the plant during germination.

Endosperm

What is not a part of the pistil of a plant?

Filament

To help identify plants, flower forms are grouped as to their position or arrangement on the stem. The flower position or arrangement is known as?

Flower inflorescence

Light inside the greenhouse is measured in _____ _____.

Foot candles

After pollination and fertilization, the flower petals begin to drop and the ovary and other surrounding parts enlarge and develop into a ...?

Fruit

The ability of a plant to withstand colder environments is known as...?

Hardiness

Soil pH is based on the concentration of _____ ions in the soil.

Hydrogen

_____ is a grey-white soil mix material of volcanic origin that is most commonly used to approve the aeration of the growing media.

Perlite

The fundamental guidelines to aesthetic design that governs the organization of the elements and materials in accordance with the laws of nature are known as the_____ __ _____.

Principals of Design

An insecticide that generally does not kill insects, but drives them away from the plant.

Repellent

Some seeds have a hard seed coat the must be soaked or scratched before the seeds are able to germinate. This process is called...?

Searification

The LD50 of a pesticide indicates....

The amount of the pesticide required to kill half of a test population of the test subject.

Greenhouse glazing is...?

The transparent cover over the greenhouse frame.

The placement of materials at different levels within and around a floral arrangement helps to establish _____.

depth

_____ is the process of events where the seed embryo goes from a dormant state to an actively growing state.

germination

In order to preserve foliage in a more natural, pliable state, place stems in...?

glycerin