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
You might also like to view...
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
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
As the endosperm matures it swells and eventually becomes the fruit.
Answer the following statement true (T) or false (F)
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