Exam 37: Plant Signals and Responses to the Environment

Statoliths, particles that move in the direction gravity pulls them, are typically ____ in plants. ​

The plant hormone ____ is primarily responsible for helping break the dormancy of seeds and buds.

The plant hormone ____ is generally responsible for long-term inhibition of plant growth such as in buds and seeds. ​

The plant hormone ____ has been shown to both promote pollen tube elongation and inhibit root elongation. ​

Molecular data has shown that ____ originated during the period when non-bryophytes diverged from the bryophytes. ​

In some cases, when an insect begins feeding on a leaf the plant responds by activating a signaling pathway that results in the production of ____, which disrupt an insect's capacity to digest proteins. ​

To grow roses commercially, which growing conditions would be optimal? ​

The plant hormones ____ appear to regulate the expression of genes associated with a plant's growth responses to light. ​

The main stimulus for phototropism is light of ____ wavelengths. ​

The plant hormone ____ governs senescence in plants, such as the loss of leaves in autumn by some plants.

Placing a ripe apple with other apples that are not ripe will cause the other apples to ripen sooner due to the release of ____.

Tropisms explain how plants can move from place to place.

Work by Charles Darwin and Francis Darwin was instrumental in the discovery of ____.

The plant hormone ____ causes chloroplasts to mature. ​

A plant's response to the relative lengths of light and dark periods in its environment during each 24-hour period is a phenomenon called ____. ​

How does thigmotropism affect the growth of a plant?

The plant hormone synthesized mainly in root tips and apparently transported through the plant in xylem sap is ____.

In monoecious species of plants, plants that have separate "male" and "female" flowers both on the same plant, applications of gibberellin ____. ​

Typically, ____ does not promote dormancy in perennial plants. ​