MCQ
In fern, spores are formed in:
- ASporangium.
- BArchegonium.
- COogonium.
- DStomium.
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| Column-$I$ | Column-$II$ |
| (Common Name) | (Taxonomic category- Family) |
| $A$. Man | $I$. Poaceae |
| $B$. Datura | $II$. Anacardiaceae |
| $C$. Mango | $III$.Solanaceae |
| $D$. Wheat | $IV$. Hominidae |
$a$. It holds the different neighbouring cells together.
$b$. It is composed of Mg pectate only.
$c$. It gets dissolved during ripening of fruits.
Correct statements is/are
$(i)$ Crossing over
$(ii)$ Synapsis
$(iii)$ Terminalisation of chiasmata
$(iv)$ Disappearance of nucleolus