MCQ
The external factors that affect the respiration are:
  • A
    temperature, insufficient $O _2$ and amount of protoplasm
  • temperature, insufficient $O _2$ and high concentration of $CO _2$
  • C
    temperature, high concentration of $CO _2$ and respiratory substrate
  • D
    temperature, high concentration of $CO _2$ and amount of protoplasm

Answer

Correct option: B.
temperature, insufficient $O _2$ and high concentration of $CO _2$
temperature, insufficient $O _2$ and high concentration of $CO _2$

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