NATIONAL FFA NURSERY/LANDSCAPE CDE GENERAL KNOWLEDGE EXAM 2018 (Questions 26-50

26. In the name Acer Rubrum cv. October Glory, ‘October Glory’ is a ____ name.

• A. family

• B. cultivar

• C. species

• D. cultivated variant

27. Which of these flower parts is male?

• A. anther

• B. style

• C. stigma

• D. pistil

28. Many plants root easily while others are difficult to root and benefit from the addition of a rooting hormone. One of the first root-promoting hormones discovered is a natural plant substance known as ____.

• A. B-Nine

• B. root growth powder

• C. indoleacetic acid

• D. bio-stimulant acid

29. What effect, if any, does the terminal bud have on lateral buds of plants?

• A. Terminal buds impede development of lateral buds by shading them.

• B. Hormones from the terminal bud suppresses growth of the lateral buds.

• C. Hormones from the terminal bud promotes growth of the lateral buds.

• D. Terminal buds have no effect on lateral buds.

30. Whiteflies are major pests of ornamental plants as well as agronomic crops. They have ____ mouth parts.

• A. piercing-sucking

• B. chewing

• C. rasping

• D. scratching-sapping

31. Oaks are commonly propagated commercially by _____.

• A. seeds

• B. cuttings

• C. grafting

• D. tissue culture

32. The blooming period of many annual flowers can be extended by:

• A. providing bees for pollination.

• B. providing butterflies.

• C. providing night lights.

• D. deadheading.

33. Which of the following has outstanding bark for visual effect in the winter landscape?

• A. Chinese elm

• B. oaks

• C. red maple

• D. mugo pine

34. Only male cultivars of this tree should be propagated and sold for planting in the landscape. The female of this species produces foul smelling fruit.

• A. pin oak

• B. ginkgo

• C. flowering crabapple

• D. flowering dogwood