By Catherine Allen
Данное издание предлагает читателям всеобъемлющую и простую в использовании информацию о животных Земли. Записи упорядочиваются по таксономии, науки посредством которой живые существа классифицируются в соответствующие группы. Каждая запись включает разделы, посвященные физическим характеристикам география распространения среда обитания питание поведение и размножение взаимодействие с животными и людьми а также природоохранный статус.
«Grzimeks pupil Animal lifestyles source: Crustaceans, Mollusks and Segmented Worms» bargains readers finished and easy-to-use info on Earths animals. Entries are prepared by means of taxonomy, the technological know-how during which dwelling issues are categorised into similar teams. each one access comprises sections on actual features geographic variety habitat vitamin habit and replica animals and other people and conservation prestige. relatives entries are by way of a number of species bills and a spread map and picture or representation for every species. Entries finish with an inventory of books, periodicals, and websites that could be used for extra research.
This quantity of «Grzimeks scholar Animal lifestyles source: Crustaceans, Mollusks and Segmented Worms» incorporates a pronunciation consultant for clinical names, a thesaurus, an summary of birds, a listing of species within the set through biome, a listing of species through geographic position, and an index. the amount has approximately two hundred full-color maps, pictures, and illustrations to brighten up the textual content, and sidebars offer extra evidence and comparable details.
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Extra resources for Grzimek's Student Animal Life Resource. Crustaceans, Mollusks, And Segmented Worms
Some species have corresponding male and female organs that allow the placement of sperm directly into their mate’s female reproductive 26 Grzimek’s Student Animal Life Resource organs. Fertilization (FUR-teh-lih-ZAY-shun) occurs inside the female’s body. As the cocoon passes over the female reproductive organs, the developing eggs, or embryos (EHM-bree-ohz), are deposited inside. The cocoons are either left in the soil, or attached to the bodies of other animals. Young leeches resemble the adult when they hatch.
Html (accessed on December 24, 2004). Videos: The Biology of Annelids. Beaufort, SC: BioMedia Associates, 2000. 32 Grzimek’s Student Animal Life Resource BEARD WORMS Pogonophora ■ Class: Pogonophora Number of families: 13 families phylumC H A P T E R ■ phylum PHYSICAL CHARACTERISTICS Beard worms live in tubes made out of chitin (KYE-tehn) and protein. Chitin is a substance similar to fingernails that makes up the outer skeleton of some animals. The tubes are mostly below the surface of the ocean bottom, with just the upper end exposed.
The reefs created by honeycomb worm tubes help to create habitats for other marine species. (Illustration by Amanda Humphrey. ) Honeycomb worms and people: The reefs created by honeycomb worm tubes help to create habitats for other marine species. Fishermen collect and use honeycomb worms as bait. Conservation status: The honeycomb worm is not considered endangered or threatened. ■ FOR MORE INFORMATION Books: Blaxland, B. Earthworms, Leeches, and Sea Worms. New York: Chelsea House Publications, 2002.
Grzimek's Student Animal Life Resource. Crustaceans, Mollusks, And Segmented Worms by Catherine Allen