Would a defoliated plant respond to photoperiodic cycle ? Why ?

Which of these plants responds to touch?

How do plants respond to external stimuli ?

How do the shoot and and roots of a plant respond to the pull of earth's gravity ?

What is the site of perception of photoperiod necessary for induction of flowering in plants? Leaves

An individuals was on a fast for a long period of time. Which cell organelle would be the most likely one to respond to the distress signal ?

What is photoperiodism? Classify plants based on photoperiodism.

Ovulation takes place on the 14th day of menstrual cycle. Why ?