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1. Why do internodal segments of sugarcane fail to propagate vegetatively even when they are in contact with damp
soil?
2. Mention any two probable reasons for rapid rise of population in our country from about 350 million at the time of
independence to about 1 billion by the year 2000.
3. The gene I that controls the ABO blood grouping in human beings has three alleles I
A, IB and i .
(a) How many different genotypes are likely to be present in the human population?
(b) Also, how many phenotypes are possibly present?
Sugarcanes arise from nodes and not internodes.so fail to propagate when in contact with damp soil.
The reasons for population rise are increased natality rate and decreased mortality rate due to advancements in technology.
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