Fossil evidence shows that Tiktaalik had both lungs and gills, indicating that it could
A. absorb oxygen only from the water.
B. take in food for nutrition from the air or the water.
C. absorb oxygen from both air and water.
D. absorb oxygen only from the air.
E. take in food for nutrition through the gills, but breath the air for oxygen.
C. absorb oxygen from both air and water.
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Rhizomes, tubers, corms, and stolons are examples of modified ____
a. leaves b. bulbs c. roots d. flowers e. stems
In 1902, Archibald Garrod linked inheritance to proteins when he noted that
A) inherited metabolic disorders in humans are associated with missing enzymes. B) substances in cells could transform bacteria from nonvirulence to virulence. C) proteins are made up of amino acids. D) the substance that transmits traits is in the cell nucleus.
Why do frequent moderate intensity disturbances increase species richness?
What will be an ideal response?
Chancroid
A. presents with a hard chancre. B. is caused by Haemophilus ducreyi. C. is very painful in both sexes. D. is caused by a spirochete.