UPSC Prelims 2019 Question:

Consider the following statements

1. Some species of turtles are herbivores. 
2. Some species of fish are herbivores. 
3. Some species of marine mammals are herbivores. 
4. Some species of snakes are viviparous.
   
   

Which of the statements given above are correct?

Explanation: 

• The green turtle is one of the largest sea turtles and the only herbivore among the different species. So, statement 1 is  correct.
  
  
• Rabbitfish, tilapia and Parrotfish are algae eaters. These herbivorous fish play a fundamental role in the health and survival of coral reefs by removing the algae that robs corals of the light. So, statement 2 is  correct.
  
  
• Dugong or sea cow is the marine mammal which is herbivore. So, statement 3 is  correct.
  
  
• Some snakes lay eggs (Oviparous), while others give birth to living young (Viviparous). Boas, pit vipers are examples of the viviparous snakes. So, statement 4 is  correct.
   

Therefore, option (4) is the correct answer.

Subject: Environment | Plant and Animal Anatomy