MCQ
The four elements that make up $99\%$ of all elements found in a living system are
- ✓$H, O, C, N$
- B$C, H, O, S$
- C$C, H, O, P$
- D$C, N, O, P$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Choose the correct combinations of $A$ and $B$
| Column-$I$ (Type of Protozoans) | Column-$II$ (Examples) |
| $A$. Amoeboid protozoans | $I$. Paramecium |
| $B$. Ciliated protozoans | $II$. Plasmodium |
| $C$. Flagellated protozoa | $III$. Amoeba |
| $D$. Sporozoans | $IV$. Trypanosoma |
Assertion $A$ : The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason $R$: Protonema develops directly from spores produced in capsule.
In the light of the above statements, choose the most appropriate answer from options given below: