Environmental heterogeneity tends to be positively correlated with species diversity
Indicate whether the statement is true or false
TRUE
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The external morphological traits of two North American species of tree frog (Hyla versicolor and H. chrysoscelis) are
very similar; therefore, scientists use ____ to distinguish them.
a. internal anatomy b. behavioral traits c. homologous appendages d. skin coloration e. analogous structures
Discuss the advantages and disadvantages of asexual and sexual reproduction
What will be an ideal response?
Monterey cypress trees grow along the coast of California with most of their branches clustered on one side of the tree, pointing away from the sea. If a monterey cypress seed is germinated more than 50 miles inland, the tree grows up with a symmetric distribution of branches, just like other evergreens. This scenario demonstrates which statement about genetics?
a. The windblown shape seen in coastal trees is obviously caused by polygenic inheritance. b. The windblown shape seen in coastal trees is obviously determined by their genotypes. c. The windblown shape seen in coastal trees is a result of environmental conditions, not their genes. d. Both the first and second choices are true. e. None of the above.
Choose the one most appropriate answer for each.
A. Trachea B. Chemoreceptors C. Oxyhemoglobin D. Larynx E. Sympathetic nerves F. Medulla oblongata G. Pharynx H. Respiratory cycle I. Bronchi J. Epiglottis K. Intercostal muscles L. Alveoli