MCQ
Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage $\left( G _{0}\right) .$ This process occurs at the end of
- A$G _{2}$ phase
- ✓$G _{1}$ phase
- C$G _{0}$ phase
- D$S$ phase
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$I.$ In gymnosperms, the male and female gametophytes have an independent existence.
$II.$ The multicellular female gametophyte is retained within the megasporangium.
$III.$ The gymnosperms are heterosporous.
Of these statements
| $List-I$ | $List - II$ |
| $(a)$ Spirogyra | $(i)$ Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
| $(b)$ Fern | $(ii)$ Dominant haploid free-living gametophyte |
| $(c)$ Funaria | $(iii)$ Dominant diploid sporophyte alternating with reduced gametophyte called prothallus |
| $(d)$ Cycas | $(iv)$ Dominant haploid leafy gametophyte alternating with partially dependent |
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