Whatever its ultimate cause(s), the Cambrian explosion is a prime example of

#Question id: 23594

#General Aptitude

#Question id: 10363

#Unit 6. System Physiology – Plant

Free living nitrogen fixing takes place as shown in the following;

             TYPE                                                                                       N-FIXING GENERA

A) Cyanobacteria (blue-green algae)                                        i) Bacillus

B) Aerobic                                                                                     ii) Clostridium

C) Facultative                                                                              iii) Anabaena

D) Anaerobic nonphotosynthetic                                            iv) Rhodospirillum

E) Anaerobic photosynthetic                                                     v) Azospirillum

 Which of the following combination of free living nitrogen fixing bacteria is correct?

#Question id: 11164

#Unit 2. Cellular Organization

#Question id: 23909

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 14924

#Unit 8. Inheritance Biology