Natural selection tends to correlate the structures of a nervous system with an animal's function within the environment. A good example is sessile or slow-moving molluscs such as clams, which

A) have little or no cephalization and simple sense organs.
B) use chemical synapses to process complex information.
C) have a well-developed brain that functions as a master control center.
D) use their circulatory system as a mechanism for distributing nerve impulses.


Answer: A

Biology & Microbiology

You might also like to view...

As the endosperm matures it swells and eventually becomes the fruit.

Answer the following statement true (T) or false (F)

Biology & Microbiology

During transfer of T-DNA to a plant cell, what is transferred?

a. the original double-stranded T-DNA, displaced by synthesis of a new double-stranded copy b. a newly synthesized double-stranded copy of the original T-DNA c. the entire Ti plasmid, and all but the T-DNA is degraded d. a single pre-existing DNA strand displaced by the synthesis of a new strand e. a newly synthesized single strand

Biology & Microbiology

Ovules develop within the ovary, which is located in the swollen lower portion of which floral organ? 

A. anther B. stamen C. filament D. stigma E. pistil

Biology & Microbiology

A classification system based on mutual similarity that involves comparing as many characteristics as possible is called a ________ system.

A. phenetic B. determinative systematic C. phylogenetic D. phyletic

Biology & Microbiology