Question
Why do we keep both snake and turtle in the same class?

Answer

Snake and turtle belong to same class-Reptilia. They are kept in same class because both:
  1. Are cold-blooded.
  2. Have scales as outer covering.
  3. Have lungs for breathing.
  4. Have three-chambered heart.
  5. lay eggs with tough outer covering.
  6. Fertilisation is internal.

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