In long-day plants,
a. extended daylight produces more Pfr.
b. the number of hours of darkness must be less
than a critical value.
c. the interruption of the dark period does not upset
the flowering sequence.
d. flowering is limited to summertime under
normal conditions.
e. all of these occur.
Answer: e
You might also like to view...
Which statement is not true?
1.Carbon dioxide is more soluble in fluid than in oxygen. 2.Carbon dioxide diffuses more rapidly across the respiratory surface than oxygen does. 3.The major muscle involved in breathing is the diaphragm. 4.Oxygen is carried primarily by blood plasma. 5.Carbon dioxide is carried by the blood plasma.
An effective parasite is one that kills its host quickly
Indicate whether the statement is true or false
Reduction of nitrogen-oxygen ions and compounds by some bacteria is called
A. aerobic respiration. B. denitrification. C. deamination. D. nitrification. E. fermentation.
Which of the following is the large lymphoid organ in the abdomen that produces and stores large amounts of white blood cells?