Question

MOVEMENT/LOCOMOTION:What structures are used to help them move around their environment?(e.g. types of muscles, jointed legs, cilia, etc.).

A)Cilia
B)Glides using muscles
C)Longitudinal muscles only
D)Circular muscles only
E)Both longitudinal and circular muscles
F)Uses flagella to move
G)Hydrostatic skeleton

Answer 1

Organisms use a variety of structures for movement, such as cilia for cells like paramecia, muscles within a hydrostatic skeleton like in earthworms, and flagella for cells like sperm or unicellular organisms like Euglena.

Step-by-step explanation:

The structures used by organisms to move around their environment vary depending on their biological makeup. There are various methods of locomotion:

• Cilia are short, numerous hair-like structures that can move cells or substances along their outer surface. For example, paramecia use cilia to propel themselves.
• Organisms move using their muscles, such as a hydrostatic skeleton in earthworms. Earthworms have both longitudinal and circular muscles that contract to create waves known as peristalsis, enabling the worm to extend and then shorten its body to achieve movement.
• Flagella are longer, fewer in number, and are used by cells like sperm or unicellular organisms like Euglena to propel themselves through the environment.

Among the options provided, structures that facilitate movement include cilia (Option A), the hydrostatic skeleton combined with muscular action (Option E), and flagella (Option F).