Why do florists and horticulturists often cut stems while they're holding a plant underwater?
A) to avoid transpiration
B) to prevent dormancy
C) to disrupt apical dominance
D) to avoid formation of an embolism
D
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Why do some seeds have to pass through an animal’s digestive tract in order to germinate?
a. The animal digests the seed coat. b. There is a lack of oxygen. c. There is a lack of sunlight. d. The temperature is appropriate.
The process by which a bacterium uses a sex pilus to transfer genetic information to another bacterium is
A. conjugation. B. mitosis. C. replication. D. apomixis. E. parthenogenesis.
The mass extinction at the end of the Cretaceous period:a
occurred about 250 million years ago. b. had little impact on gymnosperms. c. was likely the result of dramatic climate changes. d. was followed by the period dominated by reptiles and dinosaurs. e. was caused by the global distribution of iridium and the subsequent radioactive fallout.
____________________ reproduction produces clones of the parent.
A. Meiotic B. Mitotic C. Eukaryotic D. Translation E. Gemmule