A scientist was observing a specimen under a microscope. He obtained the specimen from pond water. He observed that the specimen
was egg-shaped, had hairy structures all over its body, and was covered by a membrane. He also noticed two nuclei in the specimen’s body. To which phylum did the organism belong? A) sarcodina
B) ciliophora
C) apicomplexa
D) euglenoid
The correct answer is option B, that is, Ciliophora.
Ciliophora is the term used for the phylum usually known as the ciliates. Ciliates are the most complex of cells, exhibiting an elaborate cytoskeleton, cilia, two distinct types of nuclei. Ciliates are single-celled species, which at a certain phase of their life cycle, possesses cilia, that is, short hair-like projections used for food gathering and locomotion.
Answer: You picked the correct answer, "They all inherited their traits from a common ancestor."
Explanation: Well, one I had a test on this question too and I got it right. Second, if all species shown have something in common (structures) than they most likely got it from a common ancestor.
