Which of the following statements is NOT true of Chondrichthyans?
A. They have internal fertilization.
B. They were the first vertebrates to develop teeth.
C. Their buoyance is maintained partly by the oil in their livers.
D. They are color blind.
E. Their teeth are composed of dentine and enamel whereas the scales are made of chitin.
E. Their teeth are composed of dentine and enamel whereas the scales are made of chitin.
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Science is subdivided into specific areas of study termed disciplines. These divisions are artificial but are helpful to narrow the massive scope of scientific knowledge to a manageable amount. Given what you know about each, which scientific division is likely to present the best answer to a question about how fluid dynamics affect blood pressure in mammals?
A. Bioinformatics - use of technology to study and store biological data B. Biochemistry - study of chemical reactions needed for life function, usually at the cellular level. C. Biophysics - study of biological processes through physics D. Biology - study of life
The giant kelp found along the Pacific coast is an example of
A) slime molds. B) phytoplankton. C) cyanobacteria. D) brown algae. E) water molds.
All cells possess a cell wall
Indicate whether the statement is true or false
Which of the following forms spores in a sack like structure?
A. porospores b. chlamydiospores c. sporangiospores d. arthrospores