Which is social foresting species
Leucaena leucocephala
Tectona grandis
Mangifera indica
Rosa indica
A.
Leucaena leucocephala
Leucaena leucocephala is commonly known as subabool. It is a very fast growing leguminous plant and therefore is commonly used as social foresting species.
DNA polymerase enzyme is required for synthesis of
DNA from RNA
RNA from DNA
DNA from DNA
RNA from RNA
Which type of DNA is found in bacteria
Helical DNA
Membrane bound DNA
Straight DNA
Circular free DNA
Restriction enzymes are used in genetic engineering, because they
can degrade harmful proteins
can join different DNA fragments
can cut DNA at specific base sequence
are nucleases that cut DNA at variable sites
Which of the following statement is correct about DDT
It is a biomagnifying biodegradable pollutant
It is non biomagnifying biodegradable pollutant
It is biomagnifying non biodegradable pollutant
It is not a pollutant
Micro-organism which act as a vehicle for foreign gene transfer in higher plants
Agrobacterium
E. coli
T.M.V.
Bacillus anihracis
Double fertilization means
fusion of nucleus of male gamete with the egg nucleus
fusion of two polar nuclei
fusion of sperm nucleus with secondary nucleus
fusion of one sperm nucleus with nucleus and fusion of other sperm nucleus with secondary nucleus