List of top Biology Questions

In Negative operon
Most abundant organic compound on earth is
Due to discovery of which of the following in 1980, the evolution was termed as RNA world
Ratio of complementary genes is
What is true for photolithotrophs?
Which hormone breaks dormancy of potato tuber?
What is B.O.D.
Glycolate induces opening of stomata in
Cycas have two cotyledons but not included in angiosperms becuase of
Which aquatic fern performs nitrogen fixation
Before the European invader which vegetable was absent in India
Anemophily type of pollination is found in
Which statement correct about centre of origin of plant
What is true for plasmid
What is the best pH of the soil for cultivation of plants
Enzyme first used for nitrogen fixation
Which pair is wrong
Roots of which plant contains a red pigment which have affinity for oxygen
What is true for cyanobacteria
Proteinaceous pigment which control the activities concerned with light
When water moves through a semi permeable membrane then which of the following pressure develops?
Triticale is obtained by crossing wheat with
In grasses what happens in micro spore mother cell for the formation of mature pollen grains
Frequency of an allele in an isolated population may change due to
Interferons are synthesized in response to