Each item consists of six sentences of a passage. The first and sixth sentences are given as S1 and S6. The middle four sentences have been jumbled up and labelled as P, Q, R and S. Find the proper sequence.
S1: Biology is the study of life in its entirety.
S6: Classical descriptive and clueless biology found a theoretical framework in the evolutionary theory of Darwin.
P: In later years, the focus was physiology and internal morphology or anatomy.
Q: Darwinian ideas of evolution by natural selection changed the perception completely.
R: The growth of biology as a natural science during the last 1000 years is interesting from many points of view.
S: One feature of this growth is changing emphasis from mere description of life forms to identification and classification of all recorded living forms.
The correct sequence should be
- ARSPQ
- BSPRQ
- CQRPS
- DPQRS
Explanation
R opens the historical survey ('growth of biology... during the last 1000 years'), S notes the changing emphasis, P the later focus on physiology, and Q Darwin's revolution — which S6 completes ('found a theoretical framework in the evolutionary theory of Darwin'). RSPQ; the other orders detach Q from S6 or put Darwin before the descriptive era.