The main cause of water blooms observed in rivers,lakes,and seas is .......

Which group is considered the most controversial in biological classification?

Which of the following uses light energy for the synthesis of $ATP$?

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

Give scientific reasons: Euglena contains the characteristics of both algae and protozoans.

Presence of two types of nuclei,micronucleus and macronucleus,is characteristic of which protistan group?