Hooker’s evening primrose keeps its flowers
closed until the early evening when they open.
This is an example of
a. phototropism.
b. vernalization.
c. a circadian rhythm.
d. photoperiodism.
e. apical dominance
C
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In order to stain flagella so that they may be readily observed by light microscopy, it is usually necessary to increase their thickness.
Answer the following statement true (T) or false (F)
Match the structures with their appropriate functions:
A. Roots allow plants to obtain water and nutrients, while shoots allow plants to obtain gases and sunlight. B. Roots allow plants to obtain water, nutrients and glucose, while shoots allow plants to obtain sunlight. C. Roots allow plants to obtain glucose, while shoots allow plants to obtain sunlight and water. D. Roots allow plants to obtain carbon dioxide and water, while shoots allow plants to obtain nutrients and oxygen.
The availability of genomic data has allowed scientists to construct more accurate phylogenetic trees than those based
on fossil evidence alone. a. True b. False
What is the estimated frequency of allele A in the gene pool?
A) 0.25 B) 0.50 C) 0.75 D) 0.125