Question

Animal that lives only in water and also reproduces in water is

• A. Frog
• B. Crocodile
• C. Turtle
• D. Fish

Answer 1

The correct option is D Fish

• Fish lives only in water because the gills of the fish which act as a respiratory organ, can take oxygen only from water and not from the air. Hence it is necessary for them to live in water.
• Fertilization is external in most fish species. Large quantities of eggs and sperm are simultaneously released into the water by females and males. This process of egg release is termed spawning.
  
• So, the correct answer is 'Fish'.