Question

Describe the difference between gravitropism and phototropism. What causes these types of growth? How do they differ? How are they the same?

Answer 1

Answer:

the difference between gravitropism or geotropism and phototropism is that gravitropism mainly occurs due to the action of gravity .usually the roots which move towards the earth show the positive geotropism where as the plants shoot show negative geotropism. phototropism is completely opposite to geotropism and in the phototropism the plant shoot shows positive phototropism and hence moves towards sunlight where as the root shows negative phototropism and moves downward. the main reasons for the growth of the plant in such a manner is because roots need to penetrate more into the soil hence they need to go negative against the phototropism and positive towards geotropism where as the shoot need to have more and more of a sunlight also it needs to have more contact with aerial atmosphere so as to gain more oxygen they both are same because in both the cases there is a movement of the plant