Who was the founder of the five-kingdom system of classification?

Which of the following organisms is/are correctly assigned to its/their taxonomic group?

In which of the following organisms is the presence of a rigid cell wall observed?

Engler and Prantl published a phylogenetic system in the monograph:

Which of the following is $NOT$ included in the criteria for Whittaker's five-kingdom classification system?

Consider the following statements $(A-D)$:
$(A)$ Heterocysts are important sites for nitrogen fixation in $\text{BGA}$.
$(B)$ Cell wall of diatoms is indestructible due to presence of calcium carbonate.
$(C)$ In fungi,the cell wall is made up of chitin.
$(D)$ Algae show isogamous,anisogamous,and oogamous types of sexual reproduction.
How many of the above statement$(s)$ is/are not correct?