Objective 4.1 Book200 point Project Grade

7th grade scienceDenton 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 Date Period

Table of ContentsSponges………………..1Cnidarians…………….2Worms………………….3Mollusks……………….4-5Birds……………………..6Mammals……………..7Arthropods……………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.

Examples:

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.

Examples

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.

Examples

45 minute clip on Birds

• http://player.discoveryeducation.com/index.cfm?guidAssetId=B00AB5CE-AF5C-4EAA-92D5-EA986AE921DE&blnFromSearch=1&productcode=US

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