(tr) to address or present a petition to (a person in authority, government, etc): to petition Parliament. 6. (foll by: for) to seek by petition: to petition for a change in the law.
An invertebrate is an animal without a backbone. (An animal with a backbone is called a vertebrate.) Invertebrates live in every part of the world. In fact, most of the animals on Earth are invertebrates.Invertebrates come in all different shapes and sizes.Some can be seen only through a microscope.ponges, flatworms, jellyfish, sea. Encyclopaedia EncyclopÃ¦dia, Britannica. Inc an invertebrate is an animal without a. (Backbone an animal with a backbone is called a.) Vertebrate invertebrates live in every part of the. world
In invertebrate biology, an appendage (or outgrowth) is an external body part, or natural prolongation, that protrudes from an organism 's body (in vertebrate biology, an example would be a vertebrate 's limbs).It is a general term that covers any of the homologous body parts that may extend from a body segment.n appendage which is modified to assist in feeding is known as a maxilliped or gnathopod.