Question

Which of the following character is not related to Indian chain viper?

• A. Subcandals are present in two rows
• B. An arrow mark (t) is present on the head
• C. Head is triangular covered by small scales
• D. Large black rings occur in three rows on the dorsal surface of the body

Answer 1

The correct option is B An arrow mark (t) is present on the head

An arrow mark on the head is a characteristic feature of little Indian viper, which is also known as saw scaled viper or pitless viper (local name - phoorsa) because, when it is disturbed it produce sound as phoor-phoor. Rest of three are characteristic of Indian chain viper. Large blacks rings (diamond shaped spot) in three rows are presentation the dorsal side of body, hence it is called as chain viper. On the tail two rows of subcaudals are present. Little Indian viper is found in south india and resembles to the chain viper or Ruselles viper (Vipera russelli).

Thus, the correct answer is option B.