MCQ
The meristerm which develops into primary vascular tissue is:
- AProtonema
- BPromeristem
- CGround meristem
- DProcambium
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An object is put one by one in three liquids having different densities. The object floats with $\frac{1}{9},\frac{2}{11}\ \text{and}\ \frac{3}{7}$parts of their volumes outside the liquid surface in liquids of densities d, d2 and d3 respectively. Which of the following statement is correct?
The area under a speed-time graph represents a physical quantity which has the unit of: