Cyanobacteria are phototrophic. Which of the following would they also be considered?
a. Heterotrophic
b. Autotrophic
c. Chemotrophic
d. Obligate anaerobes
e. Aerobic
Answer: b. Autotrophic
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Male crickets create sounds that we call "chirps" by rubbing one wing against the other. Female parasitic flies are attracted to the chirps and lay their eggs on the male once they locate him. Is this an example of communication?
A. Yes, because one individual produced information. B. No, because multiple individuals received information. C. Yes, because information from the sender altered the receiver's behavior. D. No, because the exchange of information resulted in a cost to the sender. E. Yes, because the exchange of information resulted in a benefit to the receiver.
The red panda, a fox-like animal, once was classified as a type of bear, based on morphological characteristics. Which of the following statements is a reasonable deduction based on this phylogenetic classification of the red panda?
a. It means red pandas look like panda bears. b. It means that DNA sequencing was used originally, but morphological evidence later showed otherwise. c. It means that red pandas shared a recent common ancestor, or node, with foxes. d. It means that red pandas are more closely related to raccoons than bears. e. It shows that phylogenies are hypothetical, subject to revision and modification.
Humans become infected with Fasciola by
A) ingesting cysts on vegetation. B) consuming cysticerci in contaminated meat. C) ingesting water contaminated with eggs. D) the penetration of cercariae through the skin. E) the bite of infected mosquitoes.
The fins of lobe-finned fish are supported by extensions of the skeleton and are moved by muscles within the fin whereas the fins of ray-finned fish are supported by flexible, nonskeletal elements and are moved by muscles from within the fish's body.
Answer the following statement true (T) or false (F)