कार्क व छाल किसकी सक्रियता – McqOptions

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1.	कार्क व छाल किसकी सक्रियता को प्रदर्शित करते है ?
A.	दितीयक विभज्योतक
B.	प्राक विभज्योतक
C.	प्राथमिक विभज्योतक
D.	इनमे से कोई नही
Answer» B. प्राक विभज्योतक

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