Multiple Choice QuestionsWhat is the correct sequence of thickness of muscles layers in the stomach of human beings
Circular➔Oblique➔Longitudinal
Oblique➔Longituinal➔Circular
Longitudinal➔ Circular➔ Oblique
None of the above
Nif genes occur in
Rhizobium
Aspergillus
Penicillium
Streptococcus
A.
Rhizobium
The nif genes are genes encoding enzymes involved in the fixation of atmospheric nitrogen into a form of nitrogen available to living organisms. The primary enzyme encoded by the nif genes is the nitrogenase complex which is in charge of converting atmospheric nitrogen (N2) to other nitrogen forms such as ammonia which the organism can use for various purposes. Besides the nitrogenase enzyme, the nif genes also encode a number of regulatory proteins involved in nitrogen fixation. The nif genes are found in both free-living nitrogen-fixing bacteria and in symbiotic bacteria associated with various plants.
A force which acts against the achievement of highest possible level to population growth is known as
population pressure
saturation level
carrying capacity
environmental resistance
Latest trend in plant disease control is
chemical control
biological control
good manure and fertilizer
breeding for disease resistance
Which animal has gone extinct in recent times in India
Acinonyx jubatus
Antilope cervicapra
Rhinocerus unicornis
Panthera leo
What is true about cleavage in the fertilized egg in humans
It is meroblastic
It starts while the egg is in fallopian tube
It is identical to normal mitosis
It starts when the egg reaches in uterus
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