Invertebrate Portfolio
You are responsible for compiling a portfolio that includes the following information about the phylums Porifera, Cnidaria, Platyhelminthes, Nematoda, Molluska and Annelida.
invertebrate
lower animal without vertebrae or notochord; contrast to vertebrate
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Invertebrates
animals that have no spinal column.
Please contribute to this project, if you have more information about this term feel free to edit this page ...
INVERTEBRATES -
ONE OF TWO MAJOR ANIMAL GROUPINGS
There are two basic groups of higher animals. They are vertebrates and invertebrates. While both have advanced through the processes of evolution, there is one fundamental difference.
The Invertebrate Animals
Index to this page
The Origin and Evolution of Animals (Metazoa)
Sponges (Phylum Porifera)
Cnidarians (Phylum Cnidaria)
Bilaterians
Protostomia vs. Deuterostomia
Lophotrochozoans vs. Ecdysozoans
Lophotrochozoans ...
Invertebrate Chordates
Not all chordates are vertebrates. Some chordates are invertebrates, lacking a vertebral column. In these invertebrate chordates, the notochord persists and is never replaced by the vertebral column.
invertebrate - a division of the animal kingdom whose chief characteristic is the lack of a spinal column, i. e. insects, slugs, spiders, shrimps, copepods
irrigation - deliberate management of adding water to land for nourishing plants
[Top] ...
[edit] Invertebrate eggs
Eggs are common among invertebrates, including insects, mollusks, and crustaceans.
[edit] Fish and amphibian eggs ...
Invertebrates
Sea urchin
Round worm Caenorhabditis elegans
Fruit fly Drosophila melanogaster (Drosophila embryogenesis) ...
Invertebrates
Fenestrate bryozoans were particularly common in the early Carboniferous seas. Archimedes, a corkscrew-shaped fossil, represents the secreted support of a colony of bryozoans that are usually no longer present.
An invertebrate marine animal usually characterised by a five-fold symmetry, and possessing an internal skeleton of calcite plates, and a complex water vascular system. Includes echinoids (sea urchins), crinoids (sea lillies) and asteroids (starfish).
In invertebrates with an open circulatory system, the body fluid that bathes tissues.
hepatic
[Gk. hepatikos, liver]
Pertaining to the liver.
Most invertebrates have a single cluster of homeotic genes. In Drosophila that cluster is broken in two. Vertebrates have four copies of the cluster, strongly suggesting that the cluster had been duplicated twice in vertebrates.
molluscs Invertebrates with a soft, unsegmented body, a muscular foot, and, with some exceptions, a calcareous shell.
Fresh water invertebrates and vertebrates have a greater salt concentration in their body than in their surrounding medium. If they have a permeable skin, water tends to enter the body and salt tends to be lost from the body.
Swash rider. Invertebrate that can migrate up and down shore with the rising and falling tide, in order to maintain station at a level that is moist but not overly washed by the waves ...
larva -- Among invertebrates, an immature stage in the life cycle which usually is much smaller than, and morphologically different from, the adult. In insects with metamorphosis, the larva must become a pupa before reaching adulthood.
Animal - kingdom composed of multicellular organisms divided into two divisions: vertebrates and invertebrates, who obtain their food from external sources and reproduce sexually or asexually ...
Directed strategy is roughly comparable for both invertebrate and mammalian templates, with 600 to 700 kb/yr generated.
Two classes of intracellular lectins involved in glycoprotein trafficking are present in yeast, model invertebrates and vertebrates, and two other classes are present in vertebrates only.
Many invertebrates are similarly well endowed, and last I heard, the mantis shrimp was the winner of the contest of who has the largest number of photoreceptor classes.
Diploblast: A lower invertebrate such as jelly fish that are composed of two tissue layers (ectoderm and endoderm) and lacking the third layer (mesoderm) present in higher invertebrates and vertebrates.
Mite: Any of several minute invertebrates belonging to the phylum Arthropoda, class Arachnida.
Morphology: Form or structure of an organism.
Multivoltine: Having more than one brood or generation per season.
Reproduction by development of an unfertilized usually female gamete that occurs especially among lower plants and invertebrate animals.
Related Terms:
Reproduction ...
haemocoel
The body cavity of invertebrates, arthropods, and mollusks. As to the coelom, the haemocoel never opens to the exterior and it does not contain germ cells.
Parthenogenesis
Reproduction by development of an unfertilized usually female gamete that occurs especially among lower plants and invertebrate animals.
microbial pesticides. Pesticides that consist of bacteria, fungi, viruses, or other microorganisms used for control of weeds, invertebrates, or plant pathogens.
In the photic zone phytoplankton flourish and it is where the fish, marine mammals, and marine invertebrates that most people are familiar with are found. Light can penetrate down to approximately 200m which marks the end of the photic zone.
 See also: Organ, Animal, Vertebrates, Invertebrates, Animals
|
