In general, communities in early succession will be dominated by fast-growing species with r-selected life histories.
Answer the following statement true (T) or false (F)
True
r-selected species are species that grow and disperse quickly and reproduce quickly and in large numbers. Therefore, they would be the first species to dominate an area in early succession.
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The ____ ion is required for ribozymes to become active and begin self-replication
a. ferrous iron b. ferric iron c. zinc d. magnesium Chapter 25 - The Origin of Life Cengage Learning Testing, Powered by Cognero Page 6 e. selenium
Which of the following statements is false?
a. All vertebrates have a ventral tubular nervous system. b. All vertebrates have a tail at some stage in their life cycle. c. All vertebrates have a notochord at some stage in their life cycle. d. All vertebrates have pharyngeal gill slits at some stage in their life cycle. e. None of these are false.
Four of the five answers listed below are located within the spinal cord. Select the exception
a. dorsal root ganglion b. interneurons between sensory input and motor outputs c. major ascending and descending nerve tracts d. interneurons connecting with other neurons e. direct reflex connections between sensory and motor neurons
Which phase(s) of meiosis occur in a similar manner to mitosis?
A. Prophase I and Prophase II B. Prophase I, Metaphase I, Anaphase I. C. Prophase II, Metaphase II, Anaphase II, Telophase II D. Prophase I, Metaphase, I, Prophase II, Metaphase II E. Prophase I, Anaphase I