In maize, hybrid vigour is exploited by
Bombarding the seeds with $DNA$
Crossing of two inbred parental lines
Harvesting seeds from the most productive plants
Inducting mutations
The bacterium responsible for biogas production are collectively called
Sunhemp is obtained from
Clove oil is obtained from
Match the columns :
Column - $I$ | Column - $II$ |
$(a)$ Aspargillas Nizer | $(1)$ Lactic acid |
$(b)$ Aceto bacter aciti | $(2)$ Citric acid |
$(c)$ Clostridium butiricum | $(3)$ Acetic acid |
$(d)$ Lacto bacillus | $(4)$ Buteric acid |
Woodruf ($1941$) were responsible for the isolation of