Please help with the following questions STAT, will rate. Provide complete answe
ID: 301868 • Letter: P
Question
Please help with the following questions STAT, will rate. Provide complete answers. Thank you Please help with the following questions STAT, will rate. Provide complete answers. Thank youQuestion 7 1.67 pts Protists are seen as the bridge between unicellular organisms and multicellular ones. Which of the following support this idea? Select all that apply Protists can form colonies with interdependence D Cells in protistan colonies may have different morphologies and duties D Cells in protistan colonies are held togethAer by proteins similar to animal proteins Some protists lack mitochondria, thus demonstrating that they are the most ancestral Question 8 1.67 pts Sponges (phylum: Porifera) are animals that possess feeding cells called collar cells. These cells have a central flagellum surrounded by a collar. The collar filters organic matter out of the water column. Which protist shares a more recent common ancestor with the poriferans?
Explanation / Answer
7) The answer will be protists can form colonies with interdependence, cells in protist colonies may have different morphologies and duties & cells in protistan colonies are held together by proteins similar to animal proteins (First three options).
Explanation: Protist is any eukaryotic organism but not an animal, plant or fungi. The can be unicellular, colonial or multicellular. In colonial type cells are connected to each other by shared walls or held together by proteins. Also each cell may perform distinct functions for survival of the colony. Thus first three options are correct. But lack of mitochondria in some protists doesn't imply that they are the most ancestral as it is possible that unicellular protist’s ancestor had mitochondria but lost them when they were no longer needed. For example Monocercomonoides had mitochondria but lost them with time.
8) The answer will be Choanoflagellates (Option 3).
Explanation: Sponges are animals & from the diagram we find that animals are most closed Choanoflagellates. Thus they share a most recent common ancestor with poriferans.