Auxospores and hormocysts are formed respectively,by

In Whittaker's classification system,which kingdom is the primary producer?

Which one of the following is a wrong statement?

Which of the following is a common characteristic shared by both yeast and bryophytes?

The sexual system of classification is:

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?