In a Long-Day Plant,interrupting a Long Night with a Flash

question 12

Multiple Choice

In a long-day plant,interrupting a long night with a flash of light may trigger flowering.Conversely,if a long day is interrupted by short period of darkness,why doesn't a short-day plant flower?

• A)Sunlight contains enough far-red light to inhibit the phytochrome induction of flowering.
• B)Phytochrome degrades slowly in the dark to the inactive P_R form.A brief dark period during the day is not sufficient to inactivate phytochrome.
• C)Phytochrome is only active in the dark.
• D)The circadian clock is less active during the day than at night.
• E)The cool temperatures at night interact with the phytochrome responsE.

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Definitions:

Units-Of-Production

A depreciation method that allocates an asset's cost based on its usage or production levels.

GAAP Methods

GAAP methods refer to accounting principles and guidelines set by the Financial Accounting Standards Board in the United States for preparing financial statements.

MACRS

Stands for Modified Accelerated Cost Recovery System, which is a method of depreciation used in the United States for tax purposes, allowing for quicker cost recovery of property and equipment.

Useful Life

The estimated time period that an asset is expected to be used by a business or be productive.