In unicellular organisms, essential nutrients can be transported directly to all parts of their body by the process of diffusion only because unicellular organisms have:

  • A. a large surface area to volume ratio
  • B. a large volume to surface area ration
  • C. permeable cell membrane
  • D. outer membrane made of cellulose
  • E. their body always immersed in the nutrient material.

Ans: A. a large surface area to volume ratio