It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. What is the major feature in these fish in support of this hypothesis?
A) Like amphibians, they are tied to the water for reproduction.
B) Their fins have skeletal and muscular structures similar to amphibian limbs.
C) They have highly evolved nervous and circulatory systems.
D) They have lungs and are able to breathe air when water is scarce.
E) They enter a hibernative stage when food is scarce, as many tetrapods do.
Answer: B
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With regard to the destruction of tropical forests, the focus is often on biodiversity and the impact to these ecosystems. What is a direct benefit to humans that helps explain why these forests need to be preserved?
A) This diversity could contain undocumented insect species. B) Natural and undisturbed areas are important wildlife habitats. C) The diversity could contain novel drugs for consumers. D) The plant diversity provides shade, which lowers global warming.
Which of the following is not a function of the eukaryotic glycocalyx?
A. Adherence B. Reception of chemical signals C. Movement D. Protection
Which plant performs C4 photosynthesis?
A) pineapple B) sugarcane C) jade plant D) oak tree
ionic bond
What will be an ideal response?