Question

notice that each Euglena has a whiplike structure called a flagellum at one of its end. what fuction would a flagllum have a unicelluar orgaism? how would this help a euglena survive in its environment?

Answer 1

Answer:

Flagellum helps the cells to move.

Explanation:

• The blunt, more rounded end is often the head part from which the whip-like tail (flagella) is attached because of the presence of a flagellum, Euglena are also known as flagellates.

• Although one flagellum is often seen, they have two flagella, one of which is often hidden in a part of the Euglena referred to as reservoir.  

• The longer, visible flagellum located at the anterior end of the organism twirls rapidly making it possible for these organisms to move across water surface

Membrane

• Unlike most plant cells, this species do not have a cell wall.

• The organelles of the organism and its cytoplasm are therefore bound by a plasma membrane that allows for easier movement.

• Observation of Euglena under more powerful electron microscopes have revealed the presence of an ornamented pellicle under the plasma membrane.

• The presence of this thin protein layer protects the their cell membrane and also helps in maintaining their shape.

• Moreover, because of their flexible nature, they also facilitate movement.