Which characteristic is associated with hardwood species?
a. thick cuticles
b. susceptibility to periodic fires
c. needle-shaped leaves
d. recessed stomata
e. adaptations for conserving water
ANSWER: b
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Which of the following is an aggregate fruit?
a. peas b. acorns c. pineapples d. strawberries e. cherries
Analysis of many Drosophila maternal effect genes reveals that many are involved in:
a. female morphogenesis. b. programmed cell death. c. forming specific segments in the embryo. d. nonspecific differentiation. e. determining the polarity of the embryo.
Mammalian eyes sense light because the photoreceptor cells have molecules called opsins, which change structure when exposed to light. Which of the following plant molecules would be analogous to mammalian opsins in their light-sensing ability?
A) auxin and phytochrome B) auxin and Pfr C) Pfr and phytochrome D) cytokinins and phototropins
Carbonic anhydrase and carbaminohemoglobin are similar in that they are both enzymes involved in respiration.
Answer the following statement true (T) or false (F)