2017 Area Floriculture CDE Junior Written Exam

A series of vocabulary flashcards covering key terms and definitions related to the Georgia FFA Association Area Floriculture CDE Junior exam material.

Signal words

Words that alert users to the toxicity of a pesticide.

Pistil

The female reproductive part of a flower, containing the ovary, style, and stigma.

Scarification

The process of softening or breaking a seed coat to overcome seed dormancy.

Harden-off

The process of acclimatizing seedlings to outdoor conditions before transplanting.

pH

A measure of the hydrogen ion concentration indicating the acidity or alkalinity of the root medium.

Respiration

The process in plants that converts sugars into energy, occurring continuously.

Botanical names

Formal names for plants, written in Latin.

Vegetative phase

The phase in plant growth where the plant produces leaves, stems, and roots after germination.

Stomata

Tiny pores in the epidermis of a leaf that allow for gas exchange.

Transpiration

The process of a plant losing water through its leaves in the form of vapor.

Cuticle

A waxy coating on leaves that prevents excessive water loss.

Calcium

An important macronutrient commonly furnished by lime.

Complete fertilizer

Fertilizers that contain all three primary nutrients: nitrogen, phosphorus, and potassium.

Clone

A plant that is genetically identical to the parent plant.

Cross-pollination

The transfer of pollen from the flowers of one plant to the stigma of flowers on another plant.

Endosperm

The food storage tissue in seeds that nourishes the plant during germination.

Perlite

A soil mix material of volcanic origin used to improve aeration.

Hardiness

The ability of a plant to withstand colder temperatures.

Sexually propagated plants

Plants propagated from seeds.

Monocots

Plants characterized by having one cotyledon, flower parts in threes, and parallel leaf venation.

Photosynthesis

The process by which plants convert light energy into chemical energy.

Terminal bud

A bud positioned at the tip of a stem containing undeveloped cells.

Primary roots

The first roots that form on a plant, critical for successful transplantation.

Germination percent

The percentage of seeds that sprout, affecting the number sown for the desired plant count.