In this section, each item consists of six sentences of a passage. The first and sixth sentences are given as SI and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly.

S1: Some plants like the pea plant climb up other plants or fences by means of tendrils.
P:  These tendrils are sensitive to touch.
Q: When they come in contact with any support, the part of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object.
R: More commonly, plants respond to stimuli slowly by growing in a particular direction.
S: This causes the tendril to circle around the object and thus cling to it.
S6: Because this growth is directional, it appears as if the plant is moving.