Deep Sea Exploration and Marine Fossils

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Questions and Answers

Which of the following is true about the deep sea?

  • It is home to the oldest known fossil (correct)
  • It is well-known and extensively explored
  • It is inhabited by sea squirts
  • It covers more than two thirds of the earth's surface

What is the name of the fossil discovered in Utah?

  • Megasiphon thylacos (correct)
  • Sea squirt
  • Cambrian Explosion
  • Tunicate body plan

When do tunicates begin their development?

  • By sticking to a rock
  • When they resemble tadpoles
  • After metamorphosis
  • As larvae (correct)

What do tunicates transform into during metamorphosis?

<p>Barrel-shaped adults (B)</p> Signup and view all the answers

Which event is associated with the establishment of the tunicate body plan?

<p>The Cambrian Explosion (A)</p> Signup and view all the answers

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Study Notes

Deep Sea

  • Deep sea is characterized by extreme pressure, near-freezing temperatures, and a lack of light.

Fossil Discovery

  • The fossil discovery in Utah is of a primitive vertebrate called Myllokunmingia.

Tunicate Development

  • Tunicates begin their development as free-swimming larvae.

Tunicate Metamorphosis

  • During metamorphosis, tunicates transform into sessile filter feeders attached to rocks or reefs.

Tunicate Body Plan Establishment

  • The establishment of the tunicate body plan is associated with the Cambrian explosion event.

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