What is phototropism? Describe an activity to demonstrate phototropism.
Phototropism: It refers to growth movement in plants in response to light stimulus.
Activity: A sunflower plant is taken and kept in sunlight. It is observed that “flower head of sunflower will move from east to west along with movement of sun.” It shows that “flower head of sunflower is positively photo tropic and moves in response to sunlight stimulus.”