In which category will you place this plant based on the provided experimental results? Choose the correct option.

Phytochrome is:

Given below are two statements.
Statement $I$: If the long dark period is interrupted by a brief flash of light,short day plants will not flower.
Statement $II$: When the long dark period is interrupted by a brief flash of light,long day plants can flower.
In the light of above statements,choose the most appropriate answer from the options given below:

Which proteinaceous pigment controls the light-dependent activities in plants?

Some plants require exposure to light for a period exceeding a well-defined critical duration. These plants are known as:

In some plants,the cold treatment may be replaced by the application of