MCQ
The nuclear membrane disappears in
- AMetaphase
- BEarly prophase
- ✓Late prophase
- DAnaphase
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| Column$-I$ | Column$-II$ |
| $(a). Br$ | $(i)$ Corolla |
| $(b). K$ | $(ii)$ Perianth |
| $(c). C$ | $(iii)$ Calyx |
| $(d). P$ | $(iv)$ Bracteate |
$(i)$ Unicellular, colonial, filamentous, symbiotic or free living.
$(ii)$ The colonies are surrounded by a gelatinous sheath.
$(iii)$ Some can fix atmospheric nitrogen in specialized cells called heterocysts.
$(iv)$ They often form blooms in water bodies.