Spores of Riccia are liberated by [RPMT 1987]
A) Peristome teeth and seta
B) Shrinkage of annulus and explosion of capsule
C) Death and decay of thallus and external pressure on calyptra
D) Xerochasy of elaters
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Spores of Riccia are liberated by Death and decay of thallus and external pressure on calyptra
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Answer: 3
Explanation: it never shed off
And will only librated when outer covering gets destroyed
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