Will our modern forests eventually become coal? What will be an ideal response?
While it is impossible to predict the future, the answer would be, not likely. The primary event that
turned the ancient forests to coal was the relatively rapid rising and falling of the seas, leading to layer
after layer of decayed tree matter pressed in the sediment. The current climate of the Earth is not
experiencing this, and thus our current forests will likely decay into non-coal organic matter.
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When the conditions of the Hardy-Weinberg equilibrium are met (select all correct choices),
A. evolution occurs. B. evolution does not occur. C. gene frequencies in the population change over time. D. gene frequencies in the population do not change over time. E. none of these occur when conditions of the Hardy-Weinberg equilibrium are met.
If a plant species exhibits maternal inheritance for leaf pigmentation, what is the phenotype of the parents of a variegated (green and white leaves) plant?
A. The maternal plant must be white and the paternal plant must be green. B. The maternal plant must be green and the paternal plant must be white. C. The maternal plant must be variegated and the paternal plant can be any color. D. Both the maternal and paternal plant must be variegated. E. The maternal plant must be variegated and the paternal plant must be white.
Refer to the accompanying figure. Reabsorption of solutes with nutritional value occurs at the point labeled as:
a. 1. b. 3. c. 5. d. 6. e. 9.
Match all applicable letters with the most appropriate term.
A. collenchyma B. sclerenchyma C. periderm D. pith E. stomata F. epidermis G. phloem H. parenchyma I. vascular cambium J. endodermis K. procambium L. amyloplast M. mesophyll