Action spectrum stimulated phototropism in oat coleoptiles. The “three finger” pattern in the 400–500 nm region is characteristic of-

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#Question id: 8915

#9. Diversity of Life Forms

The number of legs an insect has, the number of vertebrae in a vertebral column, or the number of joints in a digit (such as a finger) are all strongly influenced by

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#Question id: 8930

#9. Diversity of Life Forms

Soon after the coelom begins to form, a researcher injects a dye into the coelom of a deuterostome embryo. Initially, the dye should be able to flow directly into the

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#Question id: 9226

#9. Diversity of Life Forms

The main purpose of movement corridors is to ________.

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#Question id: 18901

#13. Methods in Biology

Calcium-47 Important aid to biomedical researchers studying the

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#Question id: 9269

#6. System Physiology – Plant

The distribution of electrons in the excited molecule is somewhat different from the distribution in the groundstate molecule, Absorption of blue light excites the chlorophyll to a higher energy state than absorption of red light because