Which of these locomotor organs would likely be the shortest?
a flagellum
a cilium
an extended pseudopod
a pellicle

a cilium

Explanation:

The cilium is cytoplasmic structures attached to the plasma membrane of cells, originating from the prolongation of centrioles, consisting of motor proteins (dyneins) forming a set of microtubules.

The length is varied, with the cilium being shorter and larger on the cell surface than all the other locomotor structures that cells may possess.

The function performed by the cilium is basically locomotor, like the protist and sperm unicellular organisms. However, cilium is also present in respiratory tract tissues (in the trachea), where they perform defense function (retention and elimination of particles and microorganisms).

ability to bond woth oxygen