Exam 38: Plant Signals and Responses to the Environment

An agar block filled with auxin is placed on top of a shoot that has had the shoot tip removed. The agar block is placed so that it covers only one side of the top of the shoot. Which of the following should occur?

Which of the following types of plant hormones trigger(s) plant responses to environmental stresses such as cold snaps, high salinity, and drought?

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -triggering jasmonate response

Which plant hormones are primarily responsible for the growth of a floral stalk in rosette plants such as cabbages?

A pea plant that is not able to make GA₁ will do which of the following?

What is the most widely used herbicide in the world, 2,4-D, a synthetic form of?

Which of the following is NOT known to be influenced by plant hormones?

Where is the auxin receptor ABP1 located in plant cells?

Which of the following was the first peptide hormone discovered in plants that functions in wound response in the tomato?

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -stabilizing cell proteins under freezing conditions

Work by Charles Darwin and Francis Darwin was instrumental in the discovery of which plant hormones?

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -degrading cell walls of pathogens

Which plant hormones are synthesized mainly in root tips and are apparently transported through the plant in xylem sap?

Which type of plant hormone appears to play a major role in gravitropism in roots and shoots?

Which plant hormones are primarily responsible for helping break the dormancy of seeds and buds?