Q. Given below some major events in the early history of life I. First heterotrophic prokaryotes II. First eukaryotes III. First autotrophic prokaryotes IV. First animals Choose the correct sequence of these evolutionary events
A) IV, III, II, I
B) I, III, II, IV
C) I, II, III, IV
D) IV, I, II, III
Explanation
Sequence of main steps during evolution (i) Free atoms (ii) Formation of simple organic molecules (iii) Formation of complex organic molecules (iv) Formation of eobionts (v) Formation of prokaryotes (various mode of nutrition) (vi) Formation of autotropic prokaryotes (vii) Formation of eukaryotes (viii) Formation of animals
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.