they use the waves that are formed to see and learn about the different layers there are in Earth's crust
Option (D) flagellated protist is correct.
The last common ancestor of all animals was probably a flagellated protist.
<h3>What is a Protist?</h3>
- Any eukaryotic organism that is not an animal, plant, or fungus is referred to as a protist.
- The absence of other eukaryotes means that protists do not constitute a natural group, or clade, even though it seems likely that they all descended from a common ancestor.
- Protozoa is another name for protists that resemble animals. Some are parasites as well.
- The four phyla that make up the Protozoa are flagellates, ciliates, spore-forming protists, and protists that resemble amoebas.
- Nuclear membranes surround the DNA of protists.
- Most protists are motile, or able to move, and many of them inhabit aquatic settings.
- Protists can reproduce sexually and/or asexually, and their life cycles are intricate.
- Protists consume, absorb, or produce food through photosynthesis.
Learn more about protist here:
brainly.com/question/1626285
#SPJ4
Answer:
Oocyte: A cell in a ovary which may undergo meiotic division to form an ovum
