MCQ
The cells of the quiescent centre are characterised by:
- ADividing regularly to add to tunica.
- BHaving dense cytoplasm and prominent nuclei.
- ✓Having light cytoplasm and small nuclei.
- DDividing regularly to add to the corpus.
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The above description is the characteristic of phylum
| Column $I$ | Column $II$ |
| $(a)$ Potato spindle | $(i)$ Virus |
| $(b)$ Cr-Jacob disease $(CJD)$ | $(ii)$ Viroid |
| $(c)$ Cholera | $(iii)$ Prion |
| $(d)$ Leaf rolling and curling | $(iv)$ Bacteria |