Parasitoid wasps are sometimes involved in a plant's defensive response. In what way are the wasps helpful to the plant?
A. The wasps enhance the plants' hypersensitive response.
B. The wasps stimulate the production of alkaloids the plants use for defense.
C. The wasps respond to a chemical the plant gives off when wounded, and the wasps lay their eggs on the caterpillar that wounded the plant.
D. The wasps trigger leaf abscission so that herbivores do not have anything to eat.
E. The wasps live in hollow thorns of the plants, and attack the plants' predators.
Answer: C
You might also like to view...
Antibodies are made by
A. red blood cells. B. macrophages. C. B cells/plasma cells. D. T cells.
The images above are an example of
a. mimicry. b. display behavior. c. warning coloration. d. chemical defenses. e. camouflage.
The E. coli protein DnaB is
a. a helicase. b. a polymerase. c. a gyrase. d. an SSB. e. an ATP-hydrolyzing protein.
You are asked to determine if a tissue sample taken from a plant stem comes from a monocot or eudicot. How will you accomplish this?
A. Examine the epidermis and determine the depth of the cuticle layer. B. Locate the vascular bundles and analyze their pattern. C. Determine if the xylem and phloem are located in separate vascular bundles or are bundled together. D. Look at the ground tissue to see if it is arranged in concentric rings or in parallel bundles. E. Examine the vascular cambium and determine if it is divided into segments or is continuous throughout the stem.