In which organisms is the cell wall found to be embedded like a soap box?

Apart from flagellar movement,euglenoids exhibit a special type of movement by contracting and expanding their body,which is known as 'euglenoid movement' or 'metaboly'. Euglenoids are included in the kingdom:

In which animal phylum is the organism $Opalina$ classified?

The class of $Trichonympha$ is:

Which organism possesses characteristics of both plants and animals?

Which of the following parasites causes the disease known as $Sleeping \text{ } Sickness$?