Exam 41: Sensory Systems in Plants

Choose the letter of the best match from the following: -Its defoliant effects were first noticed when it leaked from gas lights;later found to be produced by plants themselves.

Rapid turgor pressure changes in specialized multicellular swellings called ____________ are associated with leaves that move in response to touch or light.

Charles Darwin and his son experimented with which plant growth response?

Which of the following statements about hormones is false?

Which of the following is not a characteristics of cytokinins?

In Arabidopsis plants,about 10% of its genome is devoted to processes tied to which molecule?

Which of these is not true about gibberellins?

The acid-growth hypothesis links

Several scientists,including Charles and Francis Darwin,Frits Went and others,demonstrated that auxins caused stems to bend toward light in a series of elaborate experiments.Went was the researcher who finally determined that bending of the stem toward light was a result of which mechanism?

Choose the letter of the best match from the following: -Influential in the opening and closing of stomata.

If temperatures suddenly rise 5 to 10º C,__________ proteins are produced to help stabilize other proteins.

The plant hormone that is functional as a gas is

Most dwarf plants are mutants that

Which naturally-occurring plant hormone has a major role in the phototropic response of plants?

What happens when coleoptiles are illuminated with directional light from the side instead of from directly overhead?

Which of these is not one of the steps that lead to a gravitropic response in plants?

Which of the following statements about phytochrome is not true?

Which tropism is not correctly matched with its meaning?

How do nastic movements differ from tropisms?

In some genetically engineered tomatoes,fruit ripening was delayed by crippling the gene that produces which hormone?