When on a farm along-with crop production, some other agriculture based practice like poultry, dairy farming or bee keeping etc. is adopted, then this system of farming is known as mixed farming. It is dominant in India, where most farms have a mixture of fields and pastures.

Correct Option: A

When on a farm along-with crop production, some other agriculture based practice like poultry, dairy farming or bee keeping etc. is adopted, then this system of farming is known as mixed farming. It is dominant in India, where most farms have a mixture of fields and pastures.

Eutrophication is the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage. It leads not only to increased levels of nutrients, but increased Biological Oxygen Demand as well.

Correct Option: C

Eutrophication is the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage. It leads not only to increased levels of nutrients, but increased Biological Oxygen Demand as well.

Frame shift mutations are associated with Thalassemia. They involve a deletion or insertion of one’or two base pairs within a coding sequence of a gene. As the coding message is read in triplets codons and deletions, the reading frame of mRNA is altered resulting in a nonsense sequence of amino acids.

Correct Option: D

Frame shift mutations are associated with Thalassemia. They involve a deletion or insertion of one’or two base pairs within a coding sequence of a gene. As the coding message is read in triplets codons and deletions, the reading frame of mRNA is altered resulting in a nonsense sequence of amino acids.

Anaerobic reactions break down glucose into pyruvic acid, which then reacts to produce lactic acid. As muscle metabolism shifts from aerobic to anaerobic ATP production, lactic acid begins to accumulate in muscles and to appear in the bloodstream. This leads to muscle fatigue.

Correct Option: B

Anaerobic reactions break down glucose into pyruvic acid, which then reacts to produce lactic acid. As muscle metabolism shifts from aerobic to anaerobic ATP production, lactic acid begins to accumulate in muscles and to appear in the bloodstream. This leads to muscle fatigue.

The Widal test is used to help make a presumptive diagnosis of enteric fever, also known as typhoid fever. Typhidot is the other test used to ascertain the diagnosis of typhoid fever.

Correct Option: D

The Widal test is used to help make a presumptive diagnosis of enteric fever, also known as typhoid fever. Typhidot is the other test used to ascertain the diagnosis of typhoid fever.