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?

1. 1 and 3 only
2. 2, 3 and 4 only
3. 2 and 4 only
4. 1, 2, 3 and 4

Explanation

Statement 1 is correct

• Some turtle species, such as green turtles, primarily feed on aquatic plants and algae.

Statement 2 is correct

• Herbivorous fish feed on the algae that grow on corals and compete with them for light and oxygen. By eating the algae, these tiny fish play a big role in the survival of the entire ecosystem.
• For example: parrotfish, which eat corals that break off the reef and excrete them as white sand; damselfish, which fend off the macro algae growth that kills coral; and surgeonfish.

Statement 3 is correct

• Some species of marine mammals are herbivores: Examples include manatees and certain species of dugongs that feed on seagrass.

Statement 4 is correct

• Certain snake species, such as boa constrictors and some species of garter snakes, give birth to live young rather than laying eggs.

Answer: (d) 1, 2, 3 and 4; Difficulty Level: Easy