Brachiopod
falopian tubes
The mouth?
No, an organ system is not an invertebrate. An organ system refers to a group of organs that work together to perform specific functions in an organism. Invertebrates are animals that lack a backbone, such as insects, mollusks, and arachnids. Organ systems can be found in both vertebrates and invertebrates, encompassing various structures and functions within these organisms.
The apical organ is a sensory structure found in the larvae of some marine invertebrates, such as echinoderms. It helps the larvae to sense light, gravity, and other environmental cues, aiding in their navigation and orientation in the water column.
Vertebrate trachea: Birds and mammals Invertebrate trachea: Insects and crustaceans
As with most creatures the feeding organ of an earthworm is the mouth. Located behind the mouth is the pharynx which acts as a suction pump; its muscular walls draw food back.
You are thinking of a Brain Coral.
Gills.
No, plants do not have brains. Only vertebrate animals have brains, although invertebrate animals do have a comparable organ that controls their nervous systems.
Periwinkles are small marine snails that primarily feed on algae, diatoms, and other plant material. They use their radula, a specialized feeding organ, to scrape algae from surfaces and consume it as their main source of food.
in branchiostoma, the inner lining of the vestibule produces a complicated ciliated grooves and ridges, called wheel organ.it creats a whirling currents of water to sweep the food matters into mouth.
hmm... as far as i have studied... the only marine creature that has wheel organ is the shark. Belonging in class cephalochordata. BS biology :) ella (^^)