Which scientist is associated with the term 'Nuclein'?

Archegonia and antheridia in homosporous pteridophytes are present in:

$A$ black body radiates energy at the rate of $E \text{ W/m}^2$ at a high temperature $T \text{ K}$. When the temperature is reduced to $\left(\frac{T}{2}\right) \text{ K}$,the radiant energy is

$A$ mass of $2.9 \ kg$ is suspended from a string of length $50 \ cm$ and is at rest. Another body of mass $100 \ g$,which is moving horizontally with a velocity of $150 \ m/s$,strikes and sticks to it. Subsequently,when the string makes an angle of $60^{\circ}$ with the vertical,the tension in the string is $(g=10 \ m/s^2)$. (in $N$)

Variable number of tandem repeats $(VNTRs)$ in the $DNA$ molecule are highly useful in:

The catalyst and promoter respectively used in the Haber's process of industrial synthesis of ammonia are