The requirement of cold weather before a particular plant process occurs (e.g., germination) is known as ____
a. the biological clock
b. vernalization
c. photoperiodism
d. biennial life cycle
e. perennial life cycle
ANSWER: b
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Transcriptional regulation is considered negative when an inducer binds to and deactivates a repressor
Indicate whether the statement is true or false.
All prokaryotic photosynthesizers are anoxygenic.
Answer the following statement true (T) or false (F)
An increase in p53 activity frequently occurs in response to
A. stimulation by growth factors. B. heat shock. C. a lack of sufficient nutrients. D. DNA damage.
Which of the following sequences of events is most characteristic of a generalized plant life cycle?
A. sporophyte ® mitosis ® spore ® gametophyte ® gamete ® zygote B. sporophyte ® meiosis ® spore ® gametophyte ® gamete ® zygote C. gametophyte ® meiosis ® spore ® sporophyte ® gamete ® zygote D. gametophyte ® mitosis ® spore ® sporophyte ® gamete ® zygote