An example of a short-day plant is:

On germination,a seed first produces shoots with leaves,and flowers appear later.
$(A)$ Why do you think this happens?
$(B)$ How is this advantageous to the plant?

In some plants, flowering depends on the relative duration of light and dark periods. This response of plants to periods of day/night is called $......$.

Flowering of plants by exposure to low temperature is called

What is the response of various organisms to the duration of light and dark periods called?

The name 'phytochrome' was given by