Dandelion flowers open the petals in bright light during the daytime but close the petals in dark at night. This response of dandelion flowers to light is called:

There are three plants A,B and C. the flowers of plant A open their petals in bright light during the day but close them when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but close them during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object. (a) Name the phenomenon show by the flowers of (i) plant A, and (ii) plant B. (b) Name one flower each which behaves like the flower of (i) plant A, and (ii) plant B. (c) Name the phenoenon exhibited by the leaves of plant C. (e) Which plant/plants exhibit the phenomeon based on growth movements?

Some flowers open during the day time and close at night this is called:

Effect of length of day (light duration) on flowering is called

Inside the petals, in the middle of a flower we find a thin powdery structure, called

In flowering plants, the site of perception of light/ dark duration is

The influence of the relative duration of day and night on the flowering response of plants is called

Flowering response to length of day and night in plants is called