1. 4/19 & 4/ th 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

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

3. 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

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

5. Classification of Animals
Vertebrates
Invertebrates
35 Major Groups called a Phylum

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

7. 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

8. 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

9. 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

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

11. 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

12. What are Cnidarians?

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

14. 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.

15. 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

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