What statement best summarizes the evolutionary history of eyes?
A. Eyes evolved once and were slightly modified in different phyla.
B. Eyes evolved separately in each phylum from an ancestor with no ability to detect light.
C. Light-detection organs can develop with very little developmental constraint.
D. Development of light-sensing organs evolved once, but several eye structures evolved separately.
Answer: D
You might also like to view...
Foodborne intoxication requires the ingestion of living organisms
Indicate whether this statement is TRUE or FALSE.
Define metabolism
What will be an ideal response?
Soil in regions with high rainfall or in low-lying areas associated with poor drainage form through the process of
A) laterization. B) calcification. C) gleization. D) podzolization.
The horse (Equus caballus) has 32 pairs of chromosomes, whereas the donkey (Equus asinus) has 31 pairs of chromosomes. How many chromosomes would be expected in the somatic tissue of a mule?
What will be an ideal response?