Why can red algae grow at deeper depths of water than green algae? What will be an ideal response?
ANSWER: Green algae have chlorophylls a and b, which do not absorb green light (they reflect, hence
the algae looks green). Conversely, red algae have phycobilins that can absorb green light.
As green light can penetrate to great depths, red algae can perform photosynthesis and live at
greater depths.
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A plant that undergoes temporal separation of the steps of photosynthesis is administered a
drug that prevents the stomata from opening at night. What effect will this have on the plant?
a. It will have no effect. b. The light reactions will take place, but the Calvin cycle will not. c. The light reactions will not take place, but the Calvin cycle will. d. Both parts of photosynthesis will not take place.
Describe the plant body by explaining the functions of the three tissue systems
What will be an ideal response?
Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called ________.
A. prions B. delta agents C. viroids D. oncogenic E. latent
Which feature would have given the jawed fish an evolutionary advantage over the jawless fish when it came time to hunt for food?
A. The evolution of an ectothermic lifestyle so they could regulate their body temperature based upon the environment. B. A skin that is nonscaly that also allows for an increased respiration ability. C. Gills that would increase the efficiency of their breathing. D. A cartilaginous endoskeleton that would provide for more power while swimming. E. The evolution of jaws from the gill slits that would enable them to bite more efficiently.