Question

The following six sentences come from a paragraph. The first and the last sentences are given. Choose the order in which the four sentences (PQRS) should appear to complete the paragraph.

S1 : The touch-me-not plant folds up its leaves when touched.
S6 : The folding-up of the leaves is controlled by the pulvinus.
P : How is the plant able to do this?
Q : At the lower end of each leaf is a tiny swelling, called the pulvinus.
R : The pulvinus acts as the brain or control centre of the leaf.
S : It is only in recent years that a possible answer has been found.

Select the correct sequence.

• A. R-S-Q-P
• B. P-Q.S-R
• C. R-Q-S-P
• D. P-S-Q-R

Answer 1

The correct option is D P-S-Q-R

The first statement in the sequence should be the one that best connects with S1. It must be a continuation or extension of S1.

P is first in the sequence: S1 starts by saying that the touch-me-not plant folds up its leaves when touched. P asks a question based on the above fact. It asks, how is the plant able to do this.

P is followed by S: S begins to respond to P. It says that only in the recent years a possible answer has been found.

S is followed by Q: Q starts to tell us what this answer is. It says that at the lower end of each leaf is a tiny swelling, called the pulvinus.

Q is followed by R: R continues Q's point. It says that this pulvinus acts as the brain of the leaf. S6 then goes on to say that the folding of the leaves is thus, controlled by the pulvinus.

Thus, the correct sequence is P S Q R. Hence, D is the correct option.