NCERT Test 1 -Biology || Class 12th                              Chapter – 4 (Reproductive Health) Time: 45 min.                                                                             Marks: 15 Q.1.                                      …

Question. Explain why meiosis and gametogenesis are always interlinked. Answer.  Gametogenesis (formation of male and female gametes) is associated with reduction in  chromosome number thus, the gamete formed contains half the chromosome set of the parental  cell.  So…

Biology class 12th || Term 2 || Marking Scheme 2022 Q.1. Humans have innate immunity for protection against pathogens that may enter the gut along with food. What are the two barriers that protect the body from such pathogens? Ans.  Microbial pathogens enter the gut …

CBSE  | Theory Syllabus of Term 2 for Class 12th - Biology | 2021-2022 Unit-VIII Biology and Human Welfare Chapter-8: Human Health and Diseases Pathogens; parasites causing human diseases (malaria, dengue, chikungunya, filariasis, ascariasis,  typhoid, pneumonia, com…