How does water enter a plant?
A. Through the roots
B. Through the leaf
C. Through the stomata
D. Through the grana
Answer: A
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Which of the following statements about basidiomycetes and ascomycetes is incorrect?
A. Basidiomycetes have a short heterokaryotic stage, whereas ascomycetes have a long heterokaryotic stage. B. Basidiomycetes produce spores in clubshaped cells, whereas ascomycetes produce spores in elongated, saclike cells. C. Basidiomycetes plug their septal pores following damage in a different way from ascomycetes. D. Basidiomycetes produce four spores from each basidium, whereas ascomycetes produce eight spores from each ascus. E. Basidiomycete fruiting bodies are composed entirely of dikaryotic hyphae, whereas ascomycete fruiting bodies are composed of a combination of haploid and dikaryotic hyphae.
You buy a Schlumbergera plant, also known as a Christmas Cactus, to decorate the desk where you study late into the night. It is now December, and there are no signs of flower buds forming. What is the most plausible explanation for the lack of flowers?
A. Flowering in this plant is controlled by both day length and temperature. The warm room and extended exposure to light are preventing flower formation. B. The room is too cold for a cactus plant, which requires hot, desert conditions to flower. C. Cacti are gymnosperms, not angiosperms, and thus do not form flowers. D. As a long-day plant, the cactus requires a high light to dark ratio to flower, so it must be exposed to more sunlight. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about flower production? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Mycorrhizal fungi obtain food from plants in exchange for water and nutrients. This is an example of
A. mutualism. B. commensalism. C. herbivory. D. parasitism. E. predation.
What is the adaptation hypothesis?
A) The phage mutates so it can't infect bacteria any longer. B) The phage stimulates the bacteria to mutate to become immune to the phage. C) The phage and bacteria both mutate so the phage becomes less virulent. D) The phage mutates to infect bacteria more effectively. E) The bacteria will mutate so it can become an auxotroph.