Q. Consider the following statements:
1.Gangetic dolphins are India’s only river dolphins.
2.Gangetic dolphins generally do not have unique markings on their bodies for identification.
3.Bihar has the highest number of Gangetic dolphins in India.
How many of the statements given above are correct?
Answer: A
Notes:
Explanations –
Statements 1 and 3 are incorrect. India is home to both Gangetic dolphins and Indus River dolphins. The Ganges River dolphin is found in the Ganga-Brahmaputra-Meghna River system, while a small population of Indus River dolphins is found in the Beas River of Punjab. According to the most recent survey results, Uttar Pradesh has the highest number of Gangetic dolphins in India.
Statement 2 is correct. Gangetic dolphins generally lack unique, distinguishable markings that would allow researchers to easily identify individual dolphins. They rarely possess readily identifying marks or features, making it challenging to use traditional photo-identification techniques for studying their populations and behaviour.
Source: The Hindu
