The malaria parasite,$Plasmodium$,belongs to which class?

Which kingdom includes unicellular protozoans and primary aquatic eukaryotes?

Consider the following statements and select the correct set of features with respect to the life cycle of acellular slime moulds:
$a.$ Haploid vegetative stage as myxamoebae
$b.$ Diploid vegetative stage as plasmodium
$c.$ Capillitium
$d.$ Photosynthetic protists
$e.$ Sporic meiosis
$f.$ Isogamous sexual reproduction
$g.$ Anisogamous sexual reproduction with zygotic meiosis

Trichocysts take part in:

What is the importance of diatoms?

The link between prokaryotes and multicellular eukaryotes is ......... .