Leaves of many plants change colors in the fall because
A. the cooler weather causes plants to produce more of the accessory
photosynthetic pigments.
B. chlorophyll in the leaves degrades with shorter days and cooler temperatures.
C. the decrease in daylight hours causes the plant to produce more of the accessory photosynthetic pigments.
D. plants produce more chlorophyll.
E. All answers are correct.
B. chlorophyll in the leaves degrades with shorter days and cooler temperatures.
You might also like to view...
Probably the most abundant carbohydrate on Earth, which unbranched chain of b-glucose subunits is the primary
structural fiber in plant cell walls?
a. chitin b. amylopectin c. cellulose d. glycogen e. amylose
Which statement is true?
a. Gorillas and orangutans belong to genus Pongo. b. Monkeys use their knuckles for support while walking. c. All species of apes are capable of climbing trees. d. Arboreal gibbons display pronounced sexual dimorphism.
Identify a sequence that is most likely to be recognized by a restriction enzyme.
A. TCATCA B. CGATGC C. CCCTTT D. TGGCCA
How might anthropogenic enhancement of the greenhouse effect result in increased primary production?
A) Warmer temperatures would lengthen the growing season and speed metabolism. B) Enhanced CO2 concentrations would increase the rate of photosynthesis. C) both of the above