The evolution of conducting tubes (sieve tubes) in land plants and brown algae is an example of
A. homoplasy caused by common descent.
B. homology caused by common descent.
C. homoplasy caused by convergence.
D. homoplasy caused by evolutionary reversal.
E. homology caused by convergence.
Answer: C
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A gymnosperm that produces a long taproot and only two leaves belongs to the genus Gnetum
____________________ Indicate whether the statement is true or false.
If you provided your shade-tolerant plants with their preferred wavelength of light, but only minimal amounts of water, which of the following would you expect to occur?
A) increased plant growth B) increased amounts of oxygen released by the plants C) decreased amounts of ATP being produced by the plants D) increased growth of the plants' leaves
This disorder involves a cycle of eating binges and purges. The cause is thought to be psychological, stemming from depression, low self-esteem, displaced anger, a need to be in control of one's body, or a personality disorder.
A. obesity B. anorexia nervosa C. bulimia D. All of these answers are true.
Which of the following is an accessory structure of the digestive tract?
a) Pharynx b) Stomach c) Liver d) Mouth