NEET BIOLOGY

Detailed explanation-1: -Flagella are microscopic hair-like structures involved in the locomotion of a cell. The word “flagellum” means “whip”. The flagella have a whip-like appearance that helps to propel a cell through the liquid. Some special flagella are used in few organisms as sensory organs that can sense changes in pH and temperature.

Detailed explanation-2: -The little whip-like structures that help prokaryotic cells move are called flagella. The flagella spin around and this helps to move the prokaryotes, like bacteria, along.

Detailed explanation-3: -A slender, whip-like structure that enables protozoa, bacteria, sperm etc. to move around.

Detailed explanation-4: -Euglena is a very common green flagellate that can be observed by the unaided eye when millions of them gather to form a green film on the surface of a pond. Euglena has a single whip-like structure located at one end of its body that pulls it through the water.

Detailed explanation-5: -Based on their arrangement, bacteria are classified into four groups: monotrichous (having one flagellum), amphitrichous (single flagellum at both ends), lophotrichous (numerous flagella as a tuft), and peritrichous (flagella distributed all over the cell except at the poles).