2023 NATIONAL FFA FORESTRY CAREER DEVELOPMENT EVENT Exam

Which of the following is not correct?

• Acre equals 43,560 square feet

• Hectare equals 1,000 square meters

• Are equals 100 square meters

• Hectare equals 2.471 acres

Answer explanation

The statement 'Hectare equals 1,000 square meters' is incorrect; a hectare actually equals 10,000 square meters. The other statements about acres and hectares are accurate.

If the circumference of a tree at DBH is 47 inches, what is the diameter?

• 147

• 15

• .067

• 50

Answer explanation

To find the diameter from the circumference, use the formula: Diameter = Circumference / π. Here, Diameter = 47 / 3.14 ≈ 15 inches. Thus, the correct answer is 15.

Aerial fuel is located more than _____ feet above the ground in the mid to upper canopy of the forest.

• Six

• Eight

• Nine

• Twelve

Answer explanation

Aerial fuel is defined as being located more than six feet above the ground, specifically in the mid to upper canopy of the forest. Therefore, the correct answer is 'Six'.

A pulping process in which wood fibers are separated by dissolving the lignin that cements them together is called:

• Hydrapulping

• Chemical pulping

• Mechanical pulping

• Disk refining

Answer explanation

Chemical pulping is a process that separates wood fibers by dissolving lignin, which binds them together. This method contrasts with mechanical pulping, which physically breaks down the wood without dissolving lignin.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a survey line that runs east-west?

• Principal Meridian

• Guide Meridian

• Section

• Baseline

Answer explanation

The correct answer is Baseline, which is a survey line that runs east-west. Principal Meridians run north-south, while Guide Meridians are also north-south. Sections are subdivisions of land, not survey lines.

Which of the following products does not come from cellulose xanthate?

• Rosin

• Photographic film

• Cellophane

• Rayon

Answer explanation

Rosin is a natural resin derived from pine trees, while cellulose xanthate is used to produce cellophane and rayon. Photographic film also utilizes cellulose derivatives, making rosin the only product not derived from cellulose xanthate.

The population of plants that occupies an environment when the succession of plant species is complete and the plant population has stabilized is known as a:

• Boreal forest

• Pioneer species

• Climax community

• Terminal forest

Answer explanation

The correct answer is 'Climax community' as it refers to a stable plant population that has reached the final stage of ecological succession, where species composition remains relatively unchanged over time.

Tags

NGSS.MS-LS2-1

Which of the following is not one of the basic tissues systems of a plant?

• Vascular tissue

• Ground tissue

• Dermal tissue

• Nucleoplasm

Answer explanation

Nucleoplasm is not a basic tissue system of a plant. The basic tissue systems include vascular tissue, ground tissue, and dermal tissue, which serve essential functions in plant structure and growth.

Which tool is used to measure boundaries on scale maps to determine land area?

• Dot Grid

• Planimeter

• Survey Instrument

• Stereoscope

Answer explanation

A planimeter is specifically designed to measure the area of irregular shapes on scale maps by tracing their boundaries, making it the correct tool for determining land area.

Dehydration synthesis is a plant process that is responsible for the formation of:

• Glucose

• Starch

• Cellulose

• Chloroplast

Answer explanation

Dehydration synthesis is a process where water is removed to form larger molecules. In plants, this process is crucial for forming starch, a polysaccharide that serves as an energy storage molecule, unlike glucose or cellulose.

Tags

NGSS.HS-LS1-6