Which type of chromosome is represented by the given figure?

During which of the following reactions will a gaseous product $NOT$ be produced?

The image of the point $(3, 2, 1)$ in the plane $2x - y + 3z = 7$ is

The maximum energy in the thermal radiation from a hot source occurs at a wavelength of $11 \times 10^{-5} \text{ cm}$. According to Wien's law,the temperature of the source (on Kelvin scale) will be $n$ times the temperature of another source (on Kelvin scale) for which the wavelength at maximum energy is $5.5 \times 10^{-5} \text{ cm}$. The value of $n$ is

The most abundant prokaryotes helpful to humans in making curd from milk and in the production of antibiotics are the ones categorized as:

When two species of different genealogy come to resemble each other as a result of adaptation,the phenomenon is termed as