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: 20235

#XL - P Chemistry

Among the following compounds, the one that is polar and has the central atom with sp² hyridisation is

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#Question id: 2315

#XL - T Zoology

The function of the Golgi apparatus is to

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#Question id: 19775

#XL - P Chemistry

Which experimental observation correctly account for the phenomenon?

Experimental observation                                 Phenomenon

(A) X-rays spectra                                              Charge on nucleus

(B) alpha -particle scattering                           Quantized electron orbit .

(C) Photoelectric effect                                      The nuclear atom

(D) Emission spectra                                         Quantization of energy.

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#Question id: 4566

#XL - S Microbiology

Which of these naturalists synthesized a concept of natural selection independently of Darwin?

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#Question id: 2136

#XL - T Zoology

When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by: