What evolutionary advantage do flowers provide to angiosperms?
a. They metabolize sunlight faster than in plants without flowers.
b. They prevented predation by herbivores, as their bright colors served as a warning to keep away.
c. They developed a cooperative evolutionary relationship with pollinators, which delivered pollen to female gametophytes more directly.
d. They provided shade and protection from sunlight in hot climates.
c. They developed a cooperative evolutionary relationship with pollinators, which delivered pollen to female gametophytes more directly.
Flowers allowed angiosperms to develop cooperative evolutionary relationships with pollinators such as insects, which allowed pollination to female gametes to occur more directly.
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A homologous chromosome pair is best described as two chromosomes having ____
a. the same genes in the same order but possibly having different alleles of those genes b. the same alleles of the same genes in the same order c. the same alleles of the same genes in a different order d. different alleles of the same genes arranged in a different order e. identical DNA sequences
In the pressure flow theory, any part of a plant that does not carry out photosynthesis is a
A. source. B. sink. C. reservoir. D. aqueduct. E. companion cell.
When molecules are broken apart in respiration, ____
a. the heat produced is used to drive biological reactions b. the oxygen in the compounds that are broken apart is used as an energy source c. the energy released is channeled into molecules of ATP d. ATP is converted into ADP e. ADP is released as a waste product
In his experiments, Griffith found that transformation occurs naturally in bacteria. Explain how Griffith found this out.
What will be an ideal response?