|
Which type of tropism is shown by tulip and sunflower respectively? |
|||
|
a) |
Thigmonasty and photonasty |
b) |
Hydronasty and thermonasty |
|
c) |
Thermonasty and photonasty |
d) |
Hydronasty and photonasty |
|
Which type of tropism is shown by tulip and sunflower respectively? |
|||
|
a) |
Thigmonasty and photonasty |
b) |
Hydronasty and thermonasty |
|
c) |
Thermonasty and photonasty |
d) |
Hydronasty and photonasty |
|
(c) Nastic movements are determined by some external stimuli like light, temperature or contact, in which direction of response id prefixed. Flowers of tulips open during high temperatures and close down during low temperature, i.e., thermonastic movements. The sunflower open during the day and close during night or cloudy sky, i.e., photonastic. |