The injection of tuberculin into the skin of a sensitized individual elicits:

#Question id: 13005

#Unit 8. Inheritance Biology

#Question id: 33421

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 10362

#Unit 6. System Physiology – Plant

Bacteria can convert atmospheric nitrogen into ammonia, Several form symbiotic associations with higher plants is given below;

               HOST PLANT                                                                          N-FIXING SYMBIONTS

A) Gunnera                                                                            i) Frankia

      B) Azolla                                                                                ii) Acetobacter

C) Leguminous                                                                     iii) Azospirillum

             D) Actinorhizal                                                                      iv) Nostoc

             E) Sugarcane                                                                         v) Anabaena

             F) Miscanthus                                                                       vi) Sinorhizobium

Which of the following combination with the host plants and n-fixing symbionts is CORRECT?

#Question id: 18593

#Unit 11. Evolution and Behavior

#Question id: 9219

#Unit 9. Diversity of Life Forms

If the sex ratio in a population is significantly different from 50:50, then which of the following statements will always be accurate?