Which of the following is NOT a trait of all chordates (at some point during their lives)?

a) notochord
b) muscular, post-anal tail
c) dorsal nerve cord
d) series of pharyngeal slits
e) radial symmetry


Ans: e) radial symmetry

Biology & Microbiology

You might also like to view...

One widely used cladistic method of examining evolutionary relationships is ________, which is based on the assumption that evolution is most likely to have proceeded by the path requiring fewest changes

A) topology B) neighbor joining C) parsimony D) systematics

Biology & Microbiology

You are working in a lab studying a gene and notice that there are many other genes that code for similar traits. This is most likely the result of:

A. duplication and divergence. B. reciprocal translocation. C. inversion. D. deletion. E. translocation.

Biology & Microbiology

Which one of the following occurs first in the process of hemostasis?

A) blood clotting B) production of fibrin C) formation of a platelet plug D) vascular spasm E) destruction of calcium ions

Biology & Microbiology

Give an example of a wind-pollinated plant.

What will be an ideal response?

Biology & Microbiology