Take the prepared slide of Euglena and focus it first under low power and next under the high power of tlie microscope. Observe tlie following characteristics:
i) Euglena is an oval spindle shaped organism with a blunt anterior end and a pointed posterior end.
ii) Body is externally covered with a pellicle.
iii) Underneath the pellic le the cytoplasm is clearly differentiated into an outer ectoplasm and an inner endoplasm.
iv) Anterior end of the body bears an opening cytostome, which continues illternally as a tubular cytopharynx. The cytopllarynx leads into a large splier ical reservoir.
v) From the base of the reservoir a single whip-like flagellum arises.
vi) A single large spherical nucleus is located towards the posterior region of the body.