One of the signs of a ____ infestation is a slightly silvery cast to leaves, non-characteristic to an
otherwise healthy, green color plant. This is a result of cells dying, one by one, due to their contents
being drunk by colony members.
a. spider mite c. scale
b. mealybug d. shore fly
Question 2____ are considered nuisance pests indoors. Besides leaving small, black fecal deposits, they are able
to fly about, thus distracting plantscape clients and their guests.
a. Thrips c. White flies
b. Shore flies d. Fungus gnats
Question 3Though dead, ____ leave behind their helmet-like, hard covering in earthy colors like shades of brown
and gray which protects developing eggs. Because the covering is water-resistant, it is more
challenging to penetrate it with insecticidal soap.
a. mealybugs c. scales
b. leaf miner larvae d. thrips
Question 4____ actively move at the crawler stage, when their bodies appear to be little white lines. At the adult
stage, they are more oval-shaped and coated with a white, cotton-y, waxy covering that is waterproof.
a. Thrips c. Aphids
b. Leafminers d. Mealybugs
Question 5The cause of mini trails through the interior of the leaf is the action of ____.
a. thrips c. scale
b. leaf miner larvae d. honeydew
Question 6The harm that ____ cause(s) occurs during their larval stage, when they feed on organic matter in the
soil and damage roots.
a. fungus gnats c. mealybugs
b. aphids d. thrips
Question 7Besides being disease carriers, aphids excrete ____, a substance concentrated with plant sugars that
leaves a sticky residue on anything underneath the aphid.
a. bioprotein c. sugardew
b. honeydew d. sap
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