Which stage is indicated by the given figure?

The maximum number of sub-levels,orbitals and electrons in $N$ shell of an atom are respectively

Which of the following plants produces seeds but not flowers?

The total number of nitrogenous bases in the human genome is estimated to be about

$A$ monoatomic ideal gas,initially at temperature $T_1$,is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature $T_2$ by releasing the piston suddenly. If $L_1$ and $L_2$ are the lengths of the gas column before and after expansion respectively,then $\frac{T_1}{T_2}$ is given by:

Which of the following hormone levels causes the release of an ovum from the Graafian follicle (ovulation)?