Objective 4.1 Book 200 point Project Grade 7 th grade science Denton Middle School Ms. Hutchens

Cover page Objective 4.1 : Classify animals according to the type of skeletal structure, method of reproduction and fertilization, body symmetry, body covering, and locomotion. Name DatePeriod

Table of Contents SpongesSponges………………..1 CnidariansCnidarians…………….2 WormsWorms………………….3 MollusksMollusks……………….4-5 BirdsBirds……………………..6 MammalsMammals……………..7 ArthropodsArthropods……………8-9

Sponges (Page 1) invertebrate animals that usually have no body symmetry and never have body tissues or organs. filter feeders that are able to reproduce both sexually, utilizing external fertilization, as well as asexually utilizing budding. belong to the phylum Porifera. Adult sponges are not able to move.

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Cnidarians (Page 2) a phylum of invertebrate animals that have stinging cells and take food into a central body cavity. The stinging cells allow them to capture food and defend themselves. exhibit radial symmetry. Many adults can move to escape danger and capture food. able to reproduce sexually, utilizing external fertilization, as well as asexually, mostly through budding. Examples include coral and sea anemones.

Examples

Worms (Page 3) invertebrates that have long, narrow bodies without legs. exhibit bilateral symmetry. have tissues, organs, and organ systems. reproduce both sexually and asexually. divided into three groups- o flatworms (phylum Platyhelminthes) o roundworms (phylum Nematoda) o segmented worms (phylum Annelida)

Examples

Mollusks (Page 4-5) (phylum Mollusca) invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell. bilateral symmetry. 3 major groups of mollusks- o Gastropods (Snails) have a single external shell or no shell at all. move by the use of a muscular foot.

Mollusks (Page 4-5) o Bivalves (oysters) are two-shelled mollusks that utilize filter feeding. Adult bivalves stay in one place or move slowly through the water. o Cephalopods (octopus) ocean-dwelling mollusks whose foot is adapted to form tentacles around its mouth. Not all cephalopods have shells. capture prey by using its tentacles and swim by jet propulsion.

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Birds (Page 6) (phylum Chordata) a class of endothermic vertebrate animals whose bodies are covered with feathers and have a four-chambered heart. have the ability to fly using their wings. have internal fertilization and lay eggs. exhibit bilateral symmetry. Most parent birds will care for their young until they are able to fly.

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Mammals (Page 7) (phylum Chordata) class of endothermic vertebrate animals that have a four-chambered heart and skin covered with fur or hair. Most are born alive and is fed with milk produced by the mother. Most walk or run on four limbs. have bilateral symmetry. classified into three groups based on how their young develop: monotremes, marsupials, and placental mammals. usually care for their young for an extended period of time. All reproduce with internal fertilization.

Examples

Arthropods (Page 8) (phylum Arthropoda) invertebrates that have an external skeleton, a segmented body, and jointed appendages. They have bilateral symmetry and most reproduce sexually. Arthropods have mouthparts that are specialized for chewing their food. Most arthropods have the ability to move through the use of legs.

Arthropod Groups (Page 9) Major groups of arthropods: o crustaceans (crab and shrimp), o arachnids (Spiders and Ticks) o centipedes and millipedes o insects (mosquitoes, bees, and grasshoppers). – have wings that allow for flight.

Examples