Question

What are the different types of tropisms? Define each type of tropism. Write the name of stimulus in each case

Answer 1

The different types of tropisms are:
  (i) Phototropism: The movement of plant parts in response to light is known as phototropism. The stimulus is light.
  (ii) Geotropism: The movement of plant parts in response to gravity is known as geotropism. The stimulus is gravity.
  (iii) Hydrotropism: The movement of plant parts in response to water is known as hydrotropism. The stimulus is water.
(iv) Chemotropism: The movement of plant parts in response to chemicals is known as chemotropism. The stimulus is chemicals.
(v) Thigmotropism: The movement of plant parts in response to touch is known as thigmotropism. The stimulus is touch.