CH 26 Intro to Animal Kingdom/Sponges/Cnidarians Price 2012
1. All the members of Kingdom Animalia are ______, because they rely on other organisms for food.
2. Worms and insects are both ______-because they do not have a vertebral column.
3 . ______containing nematocysts are a characteristic associated only with cnidarians.
4 ______are a body form of cnidarians that are motile.
5. A sea anemone moves its body by using a ______skeleton.
6. Unlike plant cells, animal cells do not have ______.
7. If a cell contains a nucleus and membrane-bound organelles, it is ______.
8. An animal is______,______, & ______.
9. Only five percent of all animals have ______.
10. Aquatic animals that strain floating plants and animals from the water they take in are ______.
11. Many small aquatic organisms move oxygen and carbon dioxide through their skin by the process of______.
12. A parasite is a type of ______(meaning it lives in a relationship with another organism).
13. The upper or back side of an organism is its ______side.
14. An animal that has distinct left and right sides shows______symmetry.
15. A blastula is a stage in the development of an embryo that consists of a ______of ______.
16. Which of the three cell layers in animal embryos gives rise to muscles and much of the circulatory, reproductive, and excretory systems?______
17. Organisms that spend their entire adult lives attached to one spot are said to be ______.
18. Sponges reproduce sexually by a process called ______fertilization.
19 . Many sponges protect themselves from predators by producing ______.
20. What best describes the feeding habits of sponges?______
21. The benefit of a sponge’s producing gemmules is that gemmules allow the sponge to ______long periods of ______conditions.
22. Flagella are important to the essential functions within a sponge because flagella help move ______through the organisms body.
23. Some sponges are green because they have ______organisms within their tissues.
24. The cross-shaped spicules of some sponges serve to ______& ______incoming ______.
25. Sponges benefit some marine animals by providing a ______.
26. Cnidocytes help a cnidarian survive by ______prey.
27. ______are the simplest animals to have body symmetry.
28. Which two functions do nematocysts perform?
29. A characteristic of cnidarians is that they are ______animals (they eat meat!);
30. Cnidarians have two basic body types, a medusa and a(an) ______.
31. The body symmetry of a cnidarian is ______in the medusa stage & ______in the polyp stage (this refers to symmetry!);
32. How do polyps differ from medusas? Polyps are usually ______& usually sessile. Medusas are ______shaped and motile.
33. The nerve cells of cnidarians make up a(an) ______.
34. In a cnidarian, cells that sense gravity are ______.
35. In jellyfishes, the medusa stage reproduces (sexually or asexually);
36. The class Scyphozoa contains ______.
37. Cnidarians in the class Anthozoa are distinguished by having on a(n) ______form.
38. What is the primary body form of scyphozoans?
39. The Portuguese man-of-war is a member of what class of cnidarians?
40. Coral reefs occur in areas where there are ______levels of ______.
41. Coral bleaching is a serious ecological threat because it causes ______to ______.
42. How can an extremely diverse coral reef live in water that contains few nutrients? Reef building corals live ______with ______algae.