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CBSE Notes 2011-2012

Which statement is correct regarding Biston betularia, a species of moth found in England, during th...

Multiple choice question

Which statement is correct regarding Biston betularia, a species of moth found in England, during the late 19th century ?[Delhi 2003]

unknown

The black colouration of the moth was caused by pollution from burning coal

unknown

Black moths were covered with soot from coal burning factories

unknown

These moths were killed by devastating fungus Phytophthora.

unknown

An occasional mutation .caused black moths to be born. "