Final answer:
The organism described as causing dead animals to stink and digesting their tissues without having a nucleus is a type of Eubacteria, which are prokaryotic and match the description given.
Step-by-step explanation:
The student has asked a question that relates to the type of organism responsible for decomposing dead animals and causing a foul smell as it digests tissues. Such an organism is described as a single-celled organism without a nucleus in its cell, which matches the characteristics of prokaryotic organisms. Given the choices provided:
- Eubacteria (A) is the correct answer. Eubacteria are single-celled prokaryotic organisms, which means they do not have a nucleus in their cells and are capable of decomposing dead organic matter.
- Fungi (B) are eukaryotic, with a distinct nucleus in their cells.
- Protozoa (C) are also eukaryotic organisms with a nucleus and are not known to cause a stink as they digest dead tissue.
- A virus (D) does not digest tissues, as it requires living cells to replicate.
Therefore, the organism in question is likely a type of eubacteria, since these are known to decompose dead matter and lack a cellular nucleus.