Scientists commonly call humans 'superorganisms'. What is this description referring to?
a) Humans are the most intelligent and influential organisms on the planet.
b) Each human is an ecosystem for trillions of microorganisms.
c) Humans are the only organisms that determine the success of other organism species.
d) Each human is host to a unique species of microorganism.

• A. Humans are the most intelligent and influential organisms on the planet.
• B. Each human is an ecosystem for trillions of microorganisms.
• C. Humans are the only organisms that determine the success of other organism species.
• D. Each human is host to a unique species of microorganism.

Answer: (B)

Verified step by step guidance

1. Understand the term 'superorganism': In microbiology, this term refers to an organism that is composed of many smaller organisms working together. In the context of humans, it highlights the symbiotic relationship between humans and the microorganisms living within and on them.
2. Consider the human microbiome: Humans host a vast array of microorganisms, including bacteria, viruses, fungi, and archaea, which collectively form the human microbiome. These microorganisms play crucial roles in digestion, immunity, and overall health.
3. Evaluate the options: Analyze each option to determine which best describes the concept of humans as 'superorganisms'.
4. Option b) Each human is an ecosystem for trillions of microorganisms: This option accurately reflects the idea of humans as superorganisms, emphasizing the complex and symbiotic relationship between humans and their microbiome.
5. Conclude the reasoning: Based on the understanding of the human microbiome and the concept of superorganisms, option b is the most appropriate description, as it captures the essence of humans hosting a diverse and vast community of microorganisms.