ney 2. They possess both male and female reproductive organs. 3. The outer body layer of an organism and a 4. When discharged, the thread penetrates the skin of the prey. toxin can be injected. A characteristic of cnidarians. 5. A species whose very presence contributes to a diversity of life and whose extinction would consequently lead to the extinction of other forms of life. 6. Two sides mirroring each other along an imaginary line 7. The concentration of nerve cells at the anterior end of an animal 8. The phylum that consists of roundworms 9. Animals that lack a constant body temperature 10. Animals that produce milk. B. ectotherms C. hermaphrodites D. bilateral symmetry E. nematodes F. cephalization G. mammals H. nematocysts I. keystone species J. sponges

ney 2. They possess both male and female reproductive organs. 3. The outer body layer of an organism and a 4. When discharged, the thread penetrates the skin of the prey. toxin can be injected. A characteristic of cnidarians. 5. A species whose very presence contributes to a diversity of life and whose extinction would consequently lead to the extinction of other forms of life. 6. Two sides mirroring each other along an imaginary line 7. The concentration of nerve cells at the anterior end of an animal 8. The phylum that consists of roundworms 9. Animals that lack a constant body temperature 10. Animals that produce milk. B. ectotherms C. hermaphrodites D. bilateral symmetry E. nematodes F. cephalization G. mammals H. nematocysts I. keystone species J. sponges

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter32: Deuterostomes: Vertebrates And Their Closest Relatives

Section: Chapter Questions

Problem 1TYK: Which phylum includes animals that have a water vascular system? a. Echinodermata b. Hemichordata c....

See similar textbooks

Similar questions

Which phylum includes animals that have a water vascular system? a. Echinodermata b. Hemichordata c. Chordata d. Tetrapoda e. Amniota
Which of the following is not true of Acanthostega? It was aquatic It had gills It had four limbs It laid shelled eggs.
true/false 1. Siphonaptera has a laterally flattened body. 2. Sawflies have crochets on their prolegs. 3. Spruce Beetle (Dendroctonus rufipennis) is generally attracted to weakened or recently dead trees, and carries blue stain fungi. 4. Geometridae larvae have only 2 or 3 pairs of prolegs.
Can have both a medusa stage and a polyp stage (both in water) 1. Echinodermata2. Platyhelminthes3. Annelida4. Porifera5. Chordata6. Arthropoda7. Nematods8. Cnidaria9. Mollusca
Closest to Chordata 1. Echinodermata2. Platyhelminthes3. Annelida4. Porifera5. Chordata6. Arthropoda7. Nematods8. Cnidaria9. Mollusca
1. Describe the characteristics of members of the subphylum Crustacea. 2. Describe the adaptations of crustaceans in aquatic habitats seen in the Crustacea.
1. Cite 5 characteristics of sponges: 2. Which characteristics are unique to ctenophores? 3. Cnidarians are diploblastic, possessing an ectoderm and endoderm. Name the gelatinous nonliving material found between these two tissues. What cells are found within this gelatinous tissue? List the functions of these cells. 4. Polyp body consists of a tubular sessile body. True or false? 5. Define radial and bilateral symmetry, and protostomes and deuterostomes: 6. The presence of two different body forms, or dimorphism, is seen in the phylum Cnidaria. The form resembles an "upside-down cup" with tentacles, and the body form consists of a tubular sessile body. Hydra is an example of the body form, and a jellyfish is an example of the pody form.
1. What are the unifying characteristics of Gnathifera? Are these characteristics present in all members of the group? Is there a need for them to be placed in this group? Why or why not? 2. Account for the success of parasitic flatworms. Cite specific strategies to support your answer.
1. Compare and contrast an Acanthocephalan and a Rotifer by providing 5 points of comparison. Point of comparison Rotifer Acanthocephalan 1. 2. 3. 4. 5. 2. What structures are found in Acanthocephalans which allows them to perform its endoparasitic life? Explain
1.What are the criteria which delimit the phylum to its classes? 2.What are the sponges which are commercially important? Mention some of their uses. 3. Give some economic importance of protozoan 4.. Why is there a decrease in the size of fat bodies in frogs during the breeding season?
5. Differentiate the classes of Echinodermata based on the body structures. 6. Differentiate the different subphyla of Arthropods based on their body structures.
All arthropods 1. Undergo complete metamorphosis 2. Have jointed appendages 3. Molt 4. Have segmented bodies 5. Have an exoskeleton (1,2 and 4/ 3 and 5/ 2,3,4 and 5/ 1,4 and 5)?