The process of conversion of nitrates to nitrogen gas by bacteria is: MCQ with Answer and Explanation

Explanation:
Insulin acts primarily on liver, muscle, and adipose tissue. The liver is a key target where insulin promotes glycogenesis (glucose to glycogen), glycolysis, and lipogenesis, and inhibits gluconeogenesis, lowering blood glucose. Muscle and adipose tissue also respond. Brain takes up glucose independently of insulin via GLUT1 transporters. Thus liver is a principal target.

Explanation:
Composite fish culture is a highly productive system used in inland fisheries (ponds) in India. It involves stocking a single pond with a combination of 5-6 different indigenous and exotic fish species that have complementary feeding habits (e.g., Catla are surface feeders, Rohu are column feeders, Mrigal and Common Carp are bottom feeders). This ensures that all available food resources in the different zones of the pond are utilized efficiently without interspecific competition, maximizing total yield.

Explanation:
Decomposition involves several steps. Leaching is the process where water-soluble inorganic nutrients (like nitrates, phosphates) are washed out of the decomposing organic matter (detritus) and move deep into the soil profile, where they may become unavailable to plants. Fragmentation is the breakdown of detritus by detritivores (like earthworms).