51) Which are the free-living bacteria
Ans) Azoto bacteria
52) who was the first creature that released oxygen in our atmosphere
Ans) Cyanobacteria
53) Which gas is generally used to kill the bacteria
Ans) Chlorine
54) Which crop can make soil fertile with a nitrogenous compound
Ans) Pulse Crops
55) Whose adaptation is the air cavity
Ans) Water plant
56) What are the free-living nitrogen-fixing micro-organism
Ans) Rhizobia
57) Which plant grows very fast
Ans) Eucalyptus
58) Which plant catches insects for its food
Ans) Eutriculariya
59) Red rust on tea exist due to
Ans) Fungus
60) Cuscuta is a
Ans) Complete stem parasite
