46674.Which type of relation is found in between richness of species and variety of phylum ?
Hyperbola
Circular hyperbola
Rectangular hyperbola
Reciprocal
46702.What is the effect of air pollution on living organisms?
Reduce growth and yield of crops
Cause premature death of plants
Premature leaf fall
Both A and B
46703.Particulate matter of which size causes greatest harm to human health?
2.5 micrometer or less in diameter
More than 2.5 micrometer
More than 3.5 micrometer
Less than 3.5 micrometer
46726.From a single ear of corn, a farmer planted 200 kernels which produced 140 tall & 40 short plants. The genotypes of these off springs are most likely.
TT ,tt
TT , Tt , tt
TT ,Tt
Tt ,tt
46743.Synthesis of nucleic acids always takes place in
31 – 51 dicectioon
51 – 31 direction
Both ways
in any direction
46744.Which of the following is an example of genetic variation?
Two children have different eye colors.
One person is older than another.
One person has a scar, but her friend does not.
Tod eats meat, but his brother Rod is a vegetarian.
46746.Enzymes needed for formation of repliction fork
RNA polymerase and DNA polymerase I
Helicase and gyrase
Hexokinase and aldolase
Ligase and endo nuclease
46748.Speciation is the evolutionary process by which _____.
a new gene pool is formed
evolutionary paths of species converge
hybrid species formed
Shows up differences in physical traits