Read and choose:
Important!
Note: In some questions both the statements are correct so think and choose the best option.
A. Varun was waking through a field of sunflowers. He saw that these flowers kept of turning towards the direction of sunlight. Identify the statement\statements that clearly explains the reason.
Statement 1: The movement or growth of a plant towards the direction of light is known as phototropism.
Statement 2: The movement of the part of a plant in response to light irrespective of the direction of stimulus is known as photonasty.
B. Statement 1: The movement or response of a part of the plant in response to touch irrespective of the direction of stimulus is known as thigmotropism.
Statement 2: Movement of a plant part due to the touch is known as thigmonasty or seismonasty.
C. Statement 1: Each stomatal pore is surrounded by two kidney-shaped cells known as guard cells.
Statement 2: The lenticels help in regulating the rate of transpiration by opening and closing of stomata.