What were the first organisms on earth to photosynthesize a Viruses b Bacteria

What were the first organisms on earth to

This preview shows page 3 - 5 out of 7 pages.

20. What were the first organisms on earth to photosynthesize? a.Viruses b.Bacteria c.Green algae d.Euglena e.Marine plants 21. Which of the following extant groups would be the best model to help us understand the origin of multicellularity? 22. The appearance of major anima phyla in the fossil record occurs in a progressive, step-by-step manner over a period of approximately 500 million years. 23. Which of the following relationships would you expect to exhibit high levels of tokogeny? (mark two best answers) 24. Convergence is caused by natural selection for similar environmental conditions. a.True b.False 25. What are the two things that can cause homoplasy? (mark both answers)
Image of page 3

Subscribe to view the full document.

Era Period Start (Mya) Major Events Hadean 4500 Origin of the Earth 26.b 4000Origin of life on Earth, First photosynthesisProterozoic2500Great Oxygenation Event, First Eukaryotes, Early multicellularorganismsPaleozoic27.a540Ordovician4901st Mass ExtinctionSilurian440Fish, Land Plants, InsectsDevonian415Trilobites, 2nd Mass ExtinctionCarboniferous360Carboniferous swampsPermian300Pangea 28. e Triassic 250 Diversification of Dinosaurs, 4 th Mass Extinction Jurassic 200 Continents begin separating, Origin of flowers Cretaceous 145 Beginning Diversification of Birds Cenozoic Tertiary 65 Continents near modern position, Diversification of mammals Quaternary 1.8 Multiple Ice Ages Use the phylogeny at right to answer the following questions. 29. What is the sister taxonof the Horses?
Image of page 4
Image of page 5
  • Summer '16

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes