Question

The water of Holy Ganga River is pure due to the presence of
A. Cyanophages
B. Hydrophytes
C. Bacteria
D. Bacteriophages

Answer 1

Hint: The reason that even the polluted Ganga waters are still being considered holy is that the waters of Ganga have also shown to retain high amounts of dissolved oxygen, despite the pollution.

Complete answer:
The water of holy river Ganga doesn't get spoiled easily and may be stored for long. In Hindu mythology, Ganga is taken into account to possess descent from the heavens for the aim of redemption of the dead. The scientific reason is that water of river Ganga is of course having Bacteriophages, the viruses that eat bacteria, don't allow bacterial growth were found in the waters of Ganga.

Additional information on Bacteriophages:-
- A bacteriophage is a virus that infects a bacterium and replicates within the bacterium and destroys it.
- Bacteriophages have been used as an alternative to antibiotics against infectious diseases for over 90 years.
- Bacteriophages are composed of proteins that encapsulate DNA or RNA genome, and may have structures that are either simple or elaborate.
- Bacteriophages copy inside the bacterium following the injection of their genome into its cytoplasm.
- Bacteriophages are one of the most common and diverse bodies in the biosphere.
- Bacteriophages are ubiquitous viruses, found wherever bacteria exist.
- Approximately, there are more than $10^{31}$ bacteriophages on the planet, more than every other organism on Earth, as well as bacteria, combined.

Note: The Ganga Action Plan, commonly known as GAP, was launched dramatically in the holy city of Banaras (Varanasi) on 14 June 1985, to improve water quality. Bacteriophages are key model organisms for learning principles of evolution and ecology.