MCQ
Humoral immunity is due to
- ✓$B$-lymphocytes
- B$T$-lymphocytes
- C$L$-lymphocytes
- D$P$-lymphocytes
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$R$ : It is very common in root ecosystem and effective against several plant pathogens.
| Column $I$ | Column $II$ |
| $(a)\; XX-XO$ method of sex determination | $(i)$ Turner's syndrome |
| $(b)\; XX-XY$ method of sex determination | $(ii)$ Female heterogametic |
| $(c)$ Karyotype$-45 $ | $(iii)$ Grasshopper |
| $(d)\; ZW-ZZ$ method of sex determination | $(iv)$ Female homogametic |
Select the correct option from the following