Author Question: What do the simplest vertebrates lack? a. jaws b. notochord c. central nervous system d. teeth ... (Read 84 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560

What do the simplest vertebrates lack?
  a. jaws
  b. notochord


 

c. central nervous system
  d. teeth
  e. skull



Question 2

What is an invertebrate chordate?
  a. A chordate that has lost its gill slits
  b. A chordate with an underdeveloped dorsal nerve system
  c. A chordate that has lost its notochord
  d. A chordate that has a backbone
  e. A chordate that evolved to become an invertebrate




joshbk44

  • Sr. Member
  • ****
  • Posts: 340
Answer to Question 1

a

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

nelaaney

  • Hero Member
  • *****
  • Posts: 560
Both answers were spot on, thank you once again



joshbk44

  • Sr. Member
  • ****
  • Posts: 340

 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

For a complete list of videos, visit our video library