The mouth of the crinoid is located right next to the mouth and their digestive system is u-shaped. This is perfect in a sessile existence because, if they attach themselves to a surface, both the mouth and anus will be able to function.
The opposite of sessile is motile. Motile organisms are able to move or change position on their own, as opposed to sessile organisms which are fixed in one place.
Barnacles are sessile as adults. They start out as mobile larvae and attach to something big like a whale or a boat. Then they stay in this position for the rest of their lives.
a hydra as a polyp is not sessile but when it grows to be a hydra it is sessile
they are sessile
Sessile means attached. So a sessile organism is attached to a substrate.
A group of primitive aquatic animals that include jellyfish, corals, and sea anemones. Colenterates are sessile (sedentary) and exhibit symmetry. Their body parts are symmetrically arranged around a central point.
Tapinoma sessile was created in 1917.
hibiscus is pedicle flower
Vagrant moves, Sessile doesn't
Most sessile animals are of the phylum Mollusca.
a) sedentary life b) predators, but not prey c) concentration of sensory structures at the anterior end d) a sessile existence e) a backbone ANS: C
Sessile organisms are immobile. So. I can't think of any animals. But plants are sessile. Edit: Corals (related to anenomes) and sponges are good examples of sessile animals, the latter has a motile larval stage before it settles on a substrate and becomes sessile.