The form of the sponge body can best be described as having

a. radial symmetry.
b. asymmetry.
c. bilateral symmetry.
d. dorsal-ventral symmetry.
e. pentamerous symmetry.


B

Biology & Microbiology

You might also like to view...

The synthesis of ATP from ADP and Pi, when coupled with an exergonic chemical reaction is called ________ phosphorylation.

A. chemiosmotic B. substrate-level C. conformational change D. oxidative

Biology & Microbiology

Suppose a three-point testcross was conducted involving genes X, Y, and Z. If the most abundant classes of progeny are X Y z and x y Z and the rarest classes are x Y Z and X y z, which gene is in the middle?

A) X B) Y C) Z D) cannot be determined

Biology & Microbiology

Pascal's principle

What will be an ideal response?

Biology & Microbiology

What role do hydrogen ions (H+) play in the electron transport chain?

A) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is low); as the H+ ions flow back to where their concentration is high, they drive ATP synthase to form ATP. B) They transfer electrons to the electron transport chain. C) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is high); as the H+ ions flow back to where their concentration is low, they drive ATP synthase to form ATP. D) They add phosphate groups on ADP to form ATP.

Biology & Microbiology