Compare and contrast the life cycles of mosses and ferns. Include the elements of alternation of generation they hold in common and differences in the forms of the two generations and their relative independence and dominance. Test Section: LO3 Key Concept: relationship of life cycles bryophytes and seedless vascular plants Level: Advanced critical thinking
What will be an ideal response?
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Suppose you traveled back in time and located the first animals to have evolved feathers
You found that these animals were tree-dwelling ectotherms, able to run quickly but unable to fly. You also noticed that only males had feathers. Which hypothesis of feather evolution would these data most support? Feathers initially evolved in a role associated with _____. A) flight B) insulation C) sexual selection D) gliding
Tetrodotoxin is a potent poison, produced by some newts, pufferfish, and blue-ringed octopus that affects sodium transport involved with the voltage gates in neurons. A friend swimming in the Caribbean is pricked by a pufferfish and gets very sick. The most likely action the poison takes is
A. Mimicking a symporter and allowing sodium to rush out and potassium to rush in. B. Mimicking an antiporter and allowing sodium to rush out. C. Blocking an antiporter so sodium cannot rush in. D. Blocking a symporter and keeping sodium from rushing in.
Viral infections can usually be treated with antibiotics
Indicate whether the statement is true or false
Exposure to (Aspergillus/Candida/Microsporum) species most commonly causes allergies.
Fill in the blank(s) with the appropriate word(s).