4/19 & 4/20 - 7th Grade Agenda Collect HW: Reading Guide Chap 11 Section 1 & 2 Cnidarians, Jelly Fish & Coral Reef Video: Killer Jelly Fish Textbook Reading 412 – 416 HW: Reading & Notetaking 195 – 196

Reflection Prompt: Write 3 questions that you have about Jelly Fish and Coral Reef.

An animal that does not have a backbone is called an i__________. nvertebrate Most animal species (95%) are invertebrates Can you name some invertebrates? Jellyfishes, worms, snails, crabs, spiders & insects

An animal that has a backbone is call a V__________. ertebrate Can you name some vertebrates? Fishes, amphibians, reptiles, birds and mammals

Classification of Animals Vertebrates Invertebrates 35 Major Groups called a Phylum

Are Sharks vertebrates? Yes Although they have cartilages instead of bones, they have a skeleton and a backbone

Sea anemone and many circular animals exhibit R______ S_______ adial ymmetry What are some characteristics of Radial Symmetry Animals? Do not have distinct front or back ends Lives in the ocean Senses their environment in all directions

The balanced arrangement of a butterfly’s body is called B_______ S________ ilateral ymmetry What are some characteristics of Bilateral Symmetry Animals? Larger & More complex than radial symmetry animals Moves more quickly Sense organ in the front

Is a Sponge an animal or a plant? Sponge is an animal Although it cannot move around from place to place sponge take food into their bodies

What do sponges eat? Tiny organisms such as bacteria and protists Sponge gets its oxygen from water Network of spikes support the sponge

Sponge Larva Sponge reproduce asexually and sexually Sponges do not have separate sexes At any one time of the year, some sponges are producing eggs and others are producing sperms

What are Cnidarians?

More on Cnidarians Unlike sponges, cnidarians have specialized tissues Muscle like tissues for swimming Anemones stretch out

How does cnidarians obtain and digest food? Cnidarians captures its prey by using its stinging cells to inject venom Then the cnidarian’s tentacles pull the prey animal to its mouth From there the food passes into a body cavity where it is digested.

How are coral reefs made? Built by cnidarians Free swimming coral larva attaches to a solid surface ( broken shell, sunken ship) The coral polyp produces a hard, stony skeleton around its soft polyp body Over thousands of years, as live corals add their skeletons, the reef grows

Reflection Prompt: Write 5 facts that you learned in the video.