Which of the following includes all the chordates except tunicates and lancelets?
a. Craniates
b. Ostracoderms
c. Myxini
d. Chondrichthyes
a. Craniates
Craniates include all the chordates except tunicates and lancelets. They have a distinct cranium (head) and complex sense organs, unlike invertebrate chordates.
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Indicate whether the statement is true or false.
The intentional release of a natural enemy to attack a pest population is called ________
A) biological control B) coevolution C) sustainable resource management D) integrated pest management
Identical twins
A. are the result of one fertilized egg dividing to become two individuals. B. do not usually have the same DNA. C. result from two eggs being fertilized by one sperm. D. result from one egg being fertilized by two sperms.
Use the following study to answer the following question(s): A current trend among professional baseball players is to wear braided titanium necklaces. The titanium reportedly regulates the flow of energy through the body. The player wearing the necklace then shows improved strength, tires less, and recovers more quickly.If you were to evaluate these claims using the scientific method, what would be the first step?
A. Gather testimonials. B. Evaluate the results. C. Develop a hypothesis. D. Conduct an experiment.