Question

(a) Paramecium employs cilia for pushing food in the cytopharynx and locomotion.
(b) Hydra takes the help of tentacles for both foods capturing and locomotion.
(c) All locomotions are movements and vice-versa.
(d) Methods of locomotion vary with habitats and the demands of the situation.
(e) Ciliated epithelium is found in the respiratory tract, renal tubules, and reproductive tracts.
Which of the above statement(s) is/are false?
A. (a) and (c)
B. (c)
C. (c) and (e)
D. (d) and (e)

Answer 1

Paramecium employ cilia for eating and locomotion. Hydra uses tentacles to move and to capture prey. Locomotion refers to the movement of an organism from one position to another. Methods of locomotion do vary depending on the habitat. The renal tubules are lined with epithelia that aids in the free flow of the urine.

Complete step by step answer: Complete step by step answer:
a. The Paramecium is a single-celled eukaryote belonging to the kingdom Protista and genus of ciliate protozoa. Its whole body is covered with small hair-like structures called the cilia which helps in locomotion, which also explains the fact that these organisms belong to the phylum ciliophoran. It also has cilia around the cytopharynx, and the main function of this cilia is to help both in locomotion as well as push food into its oral cavity.
b. Hydra is a genus of invertebrate freshwater animals that have several extensions on one end called tentacles. These tentacles have nematocytes which the organism uses to sting and catch prey. These tentacles also enable locomotion during hunting for prey.
c. Not all locomotions are considered to be movements. Locomotion is the change in position of an organism, whereas movement can also refer to the movement of ions through a membrane. Therefore, not all locations are movements and vice versa.
d. Methods of locomotion differ depending on the environment and the circumstance. Some organisms have cilia and flagella but use either one or both depending on the type of environment.
e. In the case of renal tubules, these are small tubules that drain urine from the kidney into the ureter. These tubules are linked with smooth epithelial cells and not by ciliated epithelia. The smooth epithelia ensure the free flow of urine and prevent salt deposits from forming within the kidney.
Therefore, the correct option is C.

Note: The respiratory tract and the reproductive tract of our body are ciliated. The nose hairs in our nose and the cilia in the fallopian tube serve a crucial function. Hydra employs those tentacles
as a stinger which when comes in contact with the prey; releases neurotoxin to subdue and capture the prey. The tentacle also enables the hydra to grasp onto surfaces and aid in locomotion.