Question

1. which of the following describe unicellular organisms? (check all that apply)

they have organs
they have tissues
they have cells that specialize to do specific jobs
they are one celled creatures
they are more simplistic in structure
they typically have a long life span
they can usually be seen with the naked eye
they reproduce asexually (by making a copy of themselves)

Explanation:

• Unicellular organisms are single - celled. They do not have tissues or organs as these are features of multicellular organisms where cells specialize (so the options “They have organs”, “They have tissues”, “They have cells that specialize to do specific jobs” are incorrect).
• Unicellular organisms are simpler in structure compared to multicellular ones.
• Many unicellular organisms reproduce asexually (e.g., bacteria by binary fission).
• Unicellular organisms are usually microscopic (so “They can usually be seen with the naked eye” is incorrect). Also, their lifespan is not typically long in the sense of complex multicellular organisms with long - term aging processes.

Answer:

• They are more simplistic in structure
• They are one - celled creatures
• They reproduce asexually (by making a copy of themselves)