Question

A potted plant having straight parts A and B was placed horizontally on its side as shown in figure (i). After a few days it was observed that the parts A and B of the plant acquire new positions as shown in Figure (ii).
(a) Name the phenomenon exhibited by the position of plant parts A and B in Figure (ii)
(b) Name the stimulus (other than sunlight) which causes plant part A to grow and bend upwards, and plant part B to bend downwards.

Answer 1

Answer:

formula: n2=n1^(t2/t1)

n=number of times

t=years

n2 = 8 i.e. 2^3

n1 = 2 (doubles)

t2 = x

t1 = 4

n2=n1^(t2/t1)

2^3 = 2^(x/4)

3 = x/4

3*4 = x

12 = x