Biology
Grade-8
Easy
Question
__________ element is essential for Respiration in all living organisms.
- Sulfur
- Nitrogen
- Oxygen
- Phosphorous
Hint:
Oxygen is essential for Respiration in all living organisms.
The correct answer is: Oxygen
- Respiration involves inhalation and exhalation.
- In case of animal kingdom oxygen is inhaled whereas in plants oxygen is exhaled.
- Even on lower organisms this gaseous exhance occurs.
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