What is the transitional organism from invertebrates to vertebrates?

a. Ophiuroids
b. Echinoids
c. Salps
d. Amphioxus


ANS: D
Amphioxus obtain both vertebrate and invertebrate characteristics. It has a well developed dorsal
tubular nerve chord. It also undulates its body in a fish-like manner. Information can be found in the
section Construction of Complex Chordate Bodies Begins on a Stiffening Scaffold.

Environmental & Atmospheric Sciences

You might also like to view...

A ball rolls along a horizontal track with a dip in it. While in the dip its kinetic energy is

A. less. B. more. C. the same. D. need more information

Environmental & Atmospheric Sciences

____________________ are deep underground sources of freshwater found between the porous geological layers of sand, gravel, or bedrock

Fill in the blanks with correct word

Environmental & Atmospheric Sciences

Which type of sediment is generated in place, on the spot where we find them?

A) terrigenous sediments B) biogenous sediments C) hydrogenous (or authigenic) sediments D) cosmogenous sediments

Environmental & Atmospheric Sciences

How does the Theory of Plate Tectonics explain climate change over periods of millions of years??

What will be the ideal response?

Environmental & Atmospheric Sciences