MCQ
Heart is covered by:
- AVisceral membrane.
- BPleural membrane.
- CPericardium.
- DNone of these.
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| Column-$I$ | Column-$II$ |
| $A$. Leeuwenhoek | $I$. First saw and described a living cell |
| $B$. Robert Brown | $II$. Presence of cell wall is unique to plant cells |
| $C$. Schleiden | $III$. Discovered the nucleus |
| $D$. Schwann | $IV$. All plants are composed of different kind of cells |