Synchondroses
What will be an ideal response?
Bar or plate of hyaline cartilage unites bones. Almost all are synarthrotic (immovable). Cartilage of first rib with manubrium of sternum.
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Bumblebees pollinate M. lewisii, whereas hummingbirds prefer the M. cardinalis. If, by chance, a hummingbird carries M. cardinalis pollen to M. lewisii, the resulting hybrid offspring are viable. M. lewisii and M. cardinalis are different species due to
A. independent assortment. B. adaptive radiation. C. gradualism. D. postzygotic barriers to reproduction. E. prezygotic barriers to reproduction.
Coevolved pollinators receive __________, pollen,
or another reward for visiting a flower. Fill in the blank(s) with the appropriate word(s).
An evolutionary model of animal development explains how _____.
A. animal body plans are constrained by existing structures in ancestral organisms. B. homeotic genes are not universal among animals. C. homeotic genes are found only in fruit flies, where they are responsible for odd placement of appendages. D. new genetic lines are produced less by modification than by unique mutation. E. somites form as blocks of genes in cells randomly distributed throughout the body.
Which of the following choices best describes the relationship that exists between moisture and air temperature?
A. The moisture-holding capacity of air remains the same (warm or cool) and is not related to its temperature. B. The moisture-holding capacity of air decreases when it is warm and increases when it is cool. C. The moisture-holding capacity of air decreases as the higher altitude winds of the polar regions descend onto the continents. D. The moisture-holding capacity of air increases when it is warm and decreases when it is cool.