MCQ
The phenomenon of using a predator for controlling a pest is:
- ✓Biological control
- BGenetic engineering
- CArtificial control
- DConfusion technique
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Match the following sexually transmitted diseases (column $I$) with their causative agent (column $II$) and select the correct option.
| Column $-I$ | Column $-II$ |
| $(A)$ Gonorrhoea | $(i)$ HIV |
| $(B)$ Syphilis | $(ii)$ Neisseria |
| $(C)$ Genital warts | $(iii)$ Treponema |
| $(D)$ AIDS | $(iv)$ Human papilloma virus |
| Column $-I$ (Production Process) | Column $-II$ (Beverages) |
| $(A)$ Without distillation | $(1)$ Wine |
| $(B)$ By distillation | $(2)$ Beer |
| $(3)$ Whisky | |
| $(4)$ Brandy | |
| $(5)$ Rum |
$A$ $B$
$(i)$ Differentiation of megaspore mother cells
$(ii)$ Meiosis of the megaspore mother cell
$(iii)$ Formation of a linear tetrad
$(iv)$ Mitotic division of the functional megaspore
$(v)$ Degeneration of 3 megaspores
$(vi)$ Formation of embryo sac
$(vii)$ Fusion of polar nuclei
The correct sequence is