Mad cow disease is caused by $\_\_\_\_$

$$ \text { Match List-I with List-II. } $$

$$ \begin{array}{|c|l|c|l|} \hline & \text { List-I } & & \text { List-II } \\ \hline \text { A. } & \text { Spherical } & \text { I. } & \text { Vibrio } \\ \hline \text { B. } & \text { Rod } & \text { II. } & \text { Cocci } \\ \hline \text { C. } & \text { Comma } & \text { III. } & \text { Spirilla } \\ \hline \text { D. } & \text { Spirillum } & \text { IV. } & \text { Bacilli } \\ \hline \end{array} $$

Choose the correct answer from the options given below :

Symbiotic association between fungi and algae are called $\_\_\_\_$ .

Which of the following is not a prokaryote?