« previous next »

Author Question: What do the simplest vertebrates lack? a. jaws b. notochord c. central nervous system d. teeth ... (Read 87 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Aug 22, 2018

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
Reply #1 on: Aug 22, 2018
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
Reply #2 on: Aug 22, 2018
Both answers were spot on, thank you once again


joshbk44

  • Sr. Member
  • ****
  • Posts: 340
Reply #3 on: Aug 22, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

The metanephridial filtration system of annelids. The metanephridial filtration system of annelids.
The bicarbonate buffer system The bicarbonate buffer system
Digestive System Digestive System
Shark teeth Shark teeth
The digestive system. The digestive system.
Using a water-based cleaning system helps reduce the hazards from using strong chemicals. Using a water-based cleaning system helps reduce the hazards from using strong chemicals.
Video: Introduction to Genetics

For a complete list of videos, visit our video library