Multiple choice

The plants get their carbon from CO2 of the atmosphere. This was observed by

  1. Louis Pasteur

  2. De Bary

  3. De Saussure

  4. Charles Darwin

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nicolas Theodore de Saussure famously demonstrated through quantitative experiments that plants absorb carbon dioxide from the atmosphere and use carbon to build plant matter during photosynthesis.