Contamination with ________ is a concern because they are highly resistant to killing
A) archaea
B) endospores
C) pleomorphs
D) vegetative cells
E) vibrios
Answer is B) endospores
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Your friend has never gardened before. When none of the seeds he planted germinate, he asks you to suggest why. Which is the best explanation of what occurred?
A. The monocot seeds he used were only able to produce a single cotyledon each. B. The seeds were planted too deeply and used up their reserves before reaching the surface and sunlight. C. The suspensor failed to develop into an embryo within each seed. D. All seeds require fire in order to germinate. E. Seeds take more than one season to germinate.
Joints are areas of connection between two
a. bendable regions of the skeleton. b. bones. c. glands. d. cartilage regions. e. of none of these.
How are plants that grow from a seed and produce new seeds within the course of one year classified?
A) monocots B) dicots C) annuals D) perennials
Which reproductive isolating mechanism is mostly restricted to animals?
A) behavioral B) geographic C) temporal D) ecological E) hybrid infertility