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Animal Kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYAnimal Kingdom2 Marks
Question
Which type of circulation is used by mammals?
  1. Open type.
  2. Closed type.
  3. Double circulation.
  4. Single circulation.
✓

Answer

  1. Double circulation.

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