MCQ
Chasmogamy refers to the condition where
- AFlowers remains closed
- BFlowers are absent
- ✓Flowers are open
- DFlower are gamopetalous
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$B$ - In pteridophyte gametophyte is multicellular,short lived and haploid
Here $A$ and $B$ refer to

$1.$ Unicellular and prokaryote
$2.$ Unicellular and eukaryote
$3.$ Multicellular and eukaryote
$4.$ Autotrotroph and heterotroph