Invertebrate and Vertebrate Activity

Triploblastic Organisms:

I have three germ layers (tissue layers): the endoderm, mesoderm, and ectoderm. However, most invertebrates except sponges have these three germ layers. I can be found in organisms and the relatives of snails, worms, crustaceans, and insects. Who could I be?

Protostome Development:

I have, a development mode distinguished by the development of the mouth from the blastopore; often characterized by spiral cleavage and by the body cavity forming when sold masses of mesoderm split. I am not found in organisms groups other than organisms and relatives of sea stars and all vertebrates. Who could I be?

Deuterostome Organisms:

I’m an animal with a development mode distinguished by the development of an anus from the blastopore, often characterizes by radial cleavage and by the body cavity forming as out pockets of mesodermal tissue. I can be found in organisms and relatives of sea stars and all vertebrates. Who could I be?

Bilateral Symmetry:

I’m a bilateral animal in the phylum Arthropods group that has a right and a left side. However, all vertebrates have bilateral symmetry. I have a head referred to as Cephalization. Who could I be?

Radial Symmetry:

I’m a radial animal which displays a body symmetry where there are no right and left sides but rather mirror images when slice through my central axis, like those that provide habitats for “Clown fish”. Who could I be?

Polyp:

I have the opposite body form of a Medusa where motility is permitted. Yet, some members of Phylum Cnidaria are sessile (stationary) form attached to some substrate. My body form can be found in the aquarium (water exhibits) and all over Bermuda. We also live symbiotically with algae. Who could I be?

Budding:

I reproduce sexual which involves an outgrowth from one parent and pinch off to live independently or remain attached to eventually form extensive colonies. Most importantly I can be found in the oceans surround Bermuda (northern most reef system). Who could I be?

Nematocyst:

I have stinging tentacles/ cells found with phylum Cnidaria. This include floating organisms around Bermuda that long tentacles that span underwater far beyond the body of this creatures . . . . So watch out swimmers! Campbell describes this feature contained in a cnidocyte of a cnidarian, a specialized capsule like or organelle containing a coiled thread that when discharged can penetrate the body wall of the prey. Who could i be?

Gastrovascular Cavity:

I have a central cavity with a single opening in the body of certain animals that function in both digestion and distribution of nutrients. Who could I be?

Filter Feeder:

I relay on currents to bring forth nutrients. Phylum porifera and phylum cnidarian have filter feeders. These invertebrates are sessile (fixed in one place; immobile).

Tubed Feet:

I am one of numerous extension of an echinoderm’s water vascular system. Tubed feet function in location, feeding, and gas exchange underwater. Hint! These have the ability to regenerate. Who could I be?