Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 26968
TLS Online TPP Program

#Question id: 8950

You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate?

#9. Diversity of Life Forms
  1. It responds to food by moving toward it.
  2. Muscular activity of its digestive system distorts the body wall.
  3. It has bilateral symmetry.
  4. It possesses sensory structures at its anterior end.
More Questions
TLS Online TPP Program

#Question id: 4947

#11. Evolution and Behavior

The first genes on Earth were probably
TLS Online TPP Program

#Question id: 4948

#11. Evolution and Behavior

RNA molecules can both carry genetic information and be catalytic. This supports the proposal that 
TLS Online TPP Program

#Question id: 4949

#11. Evolution and Behavior

What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?
TLS Online TPP Program

#Question id: 4956

#11. Evolution and Behavior

Which measurement would help determine absolute dates by radiometric means?
TLS Online TPP Program

#Question id: 4957

#11. Evolution and Behavior

How many half-lives should have elapsed if 6.25% of the parent isotope remains in a fossil at the time of analysis?
TLS Online TPP Program

#Question id: 4958

#11. Evolution and Behavior

What is true of the fossil record of mammalian origins?