<span>When there is the presence of gills it will be easy to determine if the animal is aquatic or mollusk.
Aquatic means related to water. While Mollusca is termed as the large phylum of invertebrate animals whose members are called mollusks. Most of the mollusks live in water.
The most numerous mollusks are mantle which is important for cavity and is used for excretion and breathing, the presence of radula and their structure of the nervous system.</span>
Answer:
They do not possess a cell membrane or metabolise on their own
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Proprioception is the subconscious mechanism by which the body is able to regulate posture and movement by responding to stimuli originating in the joints, tendons, muscle, and inner ear. Proprioceptors are sensors that provide information about joint angle, muscle length, and muscle tension, which is integrated to give information about the position of the limb in space. The muscle is one type of proprioceptor that provides information about changes in muscle length. <span />
Answer:
They provide energy carriers
Explanation:
