Which scientist proposed the theory of continuity of germplasm?

In a compound,$C, H,$ and $N$ atoms are present in the ratio $9 : 1 : 3.5$ by weight. If the molecular weight of the compound is $108$,what is its molecular formula?

If the vectors $p\hat{i} + \hat{j} + \hat{k}$,$\hat{i} + q\hat{j} + \hat{k}$,and $\hat{i} + \hat{j} + r\hat{k}$ $(p \neq 1, q \neq 1, r \neq 1)$ are coplanar,then find the value of $pqr - (p + q + r)$.

Which of the following characteristics belongs to the Kingdom Animalia?

In the circuit shown in the following figure,the value of $Y$ is:

Which of the following substances is obtained from the fungus $Claviceps$ $\text{purpurea}$ (ergot)?