Unit 3 Ornamental Pest Identification and Biology

Question 1

What characteristics separate broadleaf plants (dicots) from monocots?

Answer 1

Broadleaf plants have a network of veins, flower parts in twos, fours, or fives, a taproot and 2 seed leaves. Grasses have parallel leaf veins, flower parts in threes, a fibrous root system, and one seed leaf.

Question 2

What characteristics can be used to separate grasses from sedges?

Answer 2

Grasses have round or flattened stems. Sedges generally have triangular stems. Grass leaves are two ranked, and sedge leaves are three ranked.

Question 3

When do summer annuals germinate? When do winter annuals germinate?

Answer 3

Summer annuals germinate in the spring or summer. Winter annuals germinate late summer, fall or winter.