What experimental procedure will you follow to prove phototropism and geotropism in germinating seeds ?
A. Aim : To show phototropism and geotropism in germinating seeds.
Apparatus : Glass jar, soil, bean seed, water.
i) Take a glass jar with soil. Sow a bean seed near the wall of the jar.
ii) After 4-5 days you will notice seed germination.
iii) Keep the jar under sun. Observe how roots and shoots grow.
iv) Then tilt the glass jar and keep the plant horizontally for more than 1 week.
i) Observe the plantlet when plant keeps errect. Shoot will grow towards sun and root towards gravity (soil).
ii) When keep the plant horizontally, after one week you observe that shoot take tilt grows towards sun and root will grow towards gravity.