Seed germination is stimulated by:
A. red light.
B. far-red light.
C. blue light.
D. green light.
E. UV light.
A
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During mitotic cleavage
a. no cell division occurs and the mass does not increase. b. no cell division occurs and the mass does increase. c. cell division occurs and the mass does not increase. d. cell division occurs and the mass does increase. e. the cell is in a dormant stage.
Why do ctenophores produce luminescence? a. To attract males
b. To lure prey. c. To frighten predators. d. All of these choices.
Charles Darwin and his son experimented with which plant growth response?
A. Thermotropism B. Gravitropism C. Circadian rhythms D. Heat shock E. Phototropism
Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in aluminum-rich soil, it has blue flowers; if the same plant is transplanted into soil that is lacking aluminum, the flowers produced will be pink. This is an example of
A. incomplete dominance. B. monohybrid inheritance. C. polygenetic inheritance. D. environmental effects. E. codominance.