Nursery Landscape CDE exam 2014

Scientific names generally consist of two words, the first being the genus and the second being the:

• Species

• Family

• Order

• Cultivar

The halves or thick portions of a seed that contain the tissue used as food by the seedling in its early growth is the:

• Cotyledon

• Gymnosperm

• Monocot

• Dioecious storage tissue

Plants tend to grow towards the light sources. This is known as:

• Photosynthesis

• Transpiration

• Respiration

• Phototropism

Compacted and poorly drained soils contain little ________, a gas that tree roots need to survive and grow.

• Xenon

• Carbon dioxide

• Oxygen

• Hydrogen

Failure to firm down the soil around a newly planted tree or shrub can result in air pockets. This may cause:

• Drying of plant roots

• Soil heaving in winter

• Disease

• Over watering problems

Which of the following is NOT derived from naturally occurring rocks or minerals?

• Perlite

• Vermiculite

• Peat moss

• Pea gravel

A complete fertilizer contains nitrogen, phosphorus and:

• K (calcium)

• C (Calcium)

• P (potassium)

• K (potassium)

A type of propagation in which the new plant remains attached to the mother plant until its root system is established is called:

• Layering

• Stem cutting

• Cleft grafting

• Root cutting

What is the recommended pH range for azaleas?

• 4.5-5.5

• 6.0-6.5

• 6.5-7.0

• 7.0-7.5

Which of the following propagation methods usually produces the greatest amount of genetic variation in the offspring?

• grafting

• tissue culture

• division

• seed