Distinguish Between Directional and Nondirectional Tests

question 33

Essay

Distinguish between directional and nondirectional tests.

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Definitions:

Abscisic Acid

A plant hormone that regulates growth and development, as well as stress responses such as closing stomata during drought conditions.

Auxin

A class of plant hormones that regulate aspects of growth and development, such as cell elongation.

Long-Day Plant

Plant that flowers when day length is longer than a critical length; e.g., wheat, barley, clover, and spinach.

Phytochrome

A plant pigment involved in regulating various processes like germination and flowering in response to light conditions.