NEET BIOLOGY

Detailed explanation-1: -The Latin word flagellum means “whip” to describe its lash-like swimming motion. The flagellum in archaea is called the archaellum to note its difference from the bacterial flagellum. Eukaryotic flagella and cilia are identical in structure but have different lengths and functions.

Detailed explanation-2: -Flagellar movement, or locomotion, occurs as either planar waves, oarlike beating, or three-dimensional waves. All three of these forms of flagellar locomotion consist of contraction waves that pass either from the base to the tip of the flagellum or in the reverse direction to produce forward or backward movement.

Detailed explanation-3: -Euglena is a unicellular organism that belongs to the Kingdom Protista and the Phylum Euglenophyta. Euglena move by using a flagellum, a long whip-like structure that functions as a small motor. The flagellum, which is located on the cell’s anterior (front) end, twirls to propel it through the water.

Detailed explanation-4: -Protists are the eukaryotes that cannot be classified as plants, fungi or animals. They are mostly unicellular and microscopic. Many unicellular protists, particularly protozoans, are motile and can generate movement using flagella, cilia or pseudopods.