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Questions
Questions

... An explanation linking the two following points • viruses are regarded as non–living (1) • because viruses do not have a cell structure (organelles) /viruses do not convert food into energy(1) ...
35 Arthropods and Echinoderms AP Biology
35 Arthropods and Echinoderms AP Biology

... The transition from the Annelids to the Arthropods may be the fusion of various segments during evolution (driven by environmental pressures) to produce specific appendages. (Appendages are any specializations or outgrowth from the main body.) If we look at the repeating segments of an earthworm, we ...
Chapter 33   Invertebrates
Chapter 33 Invertebrates

...  Nearly all nemerteans are marine, but a few species inhabit fresh water or damp soil.  Some are active swimmers, and others burrow into the sand.  Nemerteans and flatworms have similar excretory, sensory, and nervous systems.  However, nemerteans have an alimentary canal and a closed circulator ...
Chapter 17: Invertebrate Animals
Chapter 17: Invertebrate Animals

... made of two layers of cells. All sponges are filter feeders. They filter food out of the water that flows through their bodies. Microscopic organisms and oxygen are carried with water into the central cavity through pores of the sponge. The inner surface of the central cavity is lined with collar ce ...
OBJECTIVES
OBJECTIVES

... ingest other organisms to maintain life). Below you will find a brief description of some of the most known phyla, subphyla and classes found in Kingdom Animalia. Phylum Porifera – Phylum Porifera includes approximately 10,000 species of sponges that vary in size from a few millimeters to 2 meters a ...
About the Phylum
About the Phylum

... the deep sea and are cup-like and are a pale color. These sponges supply a home for many varieties of shrimp. They are characterized by their siliceous spicules. These are the only sponges that do not have the ability to contract. However, they have electrical impulses that ...
BioIIarthropodsgbanswers
BioIIarthropodsgbanswers

... -serve as local command centers to coordinate movement of legs and wings—can still move after head removed-have simple sense organs such as statocysts and chemical receptors -most have sophisticated sense organs such as compound eyes-crustaceans and insects have well-developed sense of taste -crusta ...
Animal Diversity - davis.k12.ut.us
Animal Diversity - davis.k12.ut.us

... Animals belonging to the same phylum have similar body structures and other characteristics. For example, all sponges (the phylum Porifera [puh RIH fuh ruh]) have asymmetry, and their cells do not form tissues. Only one animal phylum, Chordata (kor DAH tuh), contains vertebrates, also shown in Figur ...
The Lophotrochozoa are protostomes possessing a
The Lophotrochozoa are protostomes possessing a

... trochophore larvae. The exact relationships between the different phyla are not entirely certain. The lophophores include groups that are united by the presence of the lophophore, a set of ciliated tentacles surrounding the mouth. Lophophorata include the flatworms and several other phyla, including ...
Respiratory system Lecture 12 File
Respiratory system Lecture 12 File

... Each spiracle is protected by hairs and two lip-like structures that can be closed to reduce water loss, allowing insects to live in dry areas. A rise in carbon dioxide causes the spiracles to ...
Gills
Gills

... carry blood throughout your body. The blood vessels—arteries, capillaries, and veins—carry blood pumped by the heart. Arteries are blood vessels that carry blood away from the heart and to the body’s organs. Capillaries are tiny blood vessels that allow the gas exchange between body cells and blood. ...
Phylum Platyhelminthes
Phylum Platyhelminthes

... Phylum Platyhelminthes have a mesoderm which allows them to develop true muscles. Phylum Porifera and Phylum Cnidaria did not have a mesoderm and thus did not have true muscles. Phylum Platyhelminthes has a true nervous system, meaning a brain with attached nerve cords. Neither Phylum Porifera nor P ...
INVERTEBRATES Introduction: Animalia is the largest of the
INVERTEBRATES Introduction: Animalia is the largest of the

... ted legs, and in many species, one or two pairs of wings. oThe abdomen is divided into eleven segmen ts. It has no legs or wings attached to it. oThey also have exoskeletons, jointed appendages, and a segmented body. oThere are three main categories that set different insects apart: structural varia ...
File
File

... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Among the invertebrates, arthropods are unique in possessing A) a mantle B) ventral nerve cords C) open circulation D) jointed appendages E) segmented bodies 2) The following phyla are all in th ...
Nematodes and Arthropods
Nematodes and Arthropods

... phylum Nematoda (the roundworms) is more closely related to the Phylum Arthropoda (the arthropods) than to the other worm phyla. ...
Animal
Animal

... most primitive animals are asymmetrical: ...
The Worms - Cloudfront.net
The Worms - Cloudfront.net

... Sense organs - skeleton each - neuron organism - layers thatisof only circular reacts one toand sex; a specific longitudinal separate stimulus, sexes muscles, such as light together with the water in the gastrovascular cavity, that enable movement ...
matodes and Arthropods
matodes and Arthropods

... problems in humans and other animals Trichonella causes trichonosis (attaches to intestinal wall and robs host of nutrients) One species causes what we call elephantiasis Digestion – mouth and anus Circulation - none ...
Animal Diversity - davis.k12.ut.us
Animal Diversity - davis.k12.ut.us

... Animals belonging to the same phylum have similar body structures and other characteristics. For example, all sponges (the phylum Porifera [puh RIH fuh ruh]) have asymmetry, and their cells do not form tissues. Only one animal phylum, Chordata (kor DAH tuh), contains vertebrates, also shown in Figur ...
diversity of animals
diversity of animals

... South Africa is fortunate to have the largest variety of animals on the planet. Both animals and plants are different to organisms in the other Kingdoms as they are multicellular. Organisms in the Animal Kingdom (Anamalia) are different to the organisms in the Plant Kingdom (Plantae) because they ca ...
SI 10/19/08 Exam 2 Review 1. Which of the following phylogenetic
SI 10/19/08 Exam 2 Review 1. Which of the following phylogenetic

... 1. Which of the following phylogenetic groups within the animal kingdom encompasses all the others in the list? A. rotifera B. deuterostomes C. bilateria D. arthropoda E. protostomes 2. Octopi are most closely related to which of the following organisms? A. clams B. jellyfish C. starfish D. earthwor ...
Lesson Overview
Lesson Overview

... Invertebrates include all animals that lack a backbone, or vertebral column. All chordates exhibit four characteristics during at least one stage of life: a dorsal, hollow nerve cord; a notochord; a tail that extends beyond the anus; and pharyngeal pouches. ...
Section 1.4 Asexual Reproduction in Bacteria, Protists, Fungi, and
Section 1.4 Asexual Reproduction in Bacteria, Protists, Fungi, and

... 6) Why are protists important? They are the source of many food chains and they are to blame for many diseases that affect humans. 7) What are the three methods that fungi use to reproduce asexually? Fragmentation, Budding and spores. 8) Define fragmentation. Fragmentation is when a small piece brea ...
Diversity – Eukarya – Kingdom Animalia
Diversity – Eukarya – Kingdom Animalia

... • Sketch and label the stages of animal embryonic development, page 655 in text. Use colors!!! ...
Review sheet
Review sheet

... Review sheet 7c (Arthropods, Echinoderms, Chordates) ...
< 1 ... 4 5 6 7 8 9 10 11 12 ... 28 >

Invertebrate



Invertebrates are animals that neither possess nor develop a vertebrae (vertebral column) , derived from the notochord. This includes all animals apart from the subphylum Vertebrata. Familiar examples of invertebrates include insects, crabs, lobsters and their kin, snails, clams, octopuses and their kin, starfish, sea-urchins and their kin, and worms.The majority of animal species are invertebrates. One estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata.Some of the so-called invertebrates, such as the Chaetognatha, Hemichordata, Tunicata and Cephalochordata are more closely related to the vertebrates than to other invertebrates. This makes the term ""invertebrate"" almost meaningless for taxonomic purposes.
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