BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 33, Problem 4S
Summary Introduction
To explain:
The reason that the lack of
Introduction:
Platyhelminthes such as
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Compare the whole specimens and cross-sections of Ascaris and Dugesia. How would you differentiate these worms? Also, nematodes have a complete gut whereas most platyhelminths have an incomplete one. Think of one advantage of having a complete gut.
Nematode worms and annelid worms share which of the following features?
presence of a circulatory system
molting
absence of species with parasitic lifestyles
presence of segmentation
a digestive tract with two openings (a mouth and an anus)
The phylum Platyhelminthes has what type of symmetry?
Chapter 33 Solutions
BIOLOGY
Ch. 33.1 - Prob. 1LOCh. 33.2 - Prob. 1LOCh. 33.2 - Prob. 2LOCh. 33.3 - Prob. 1LOCh. 33.4 - Prob. 1LOCh. 33.4 - Prob. 2LOCh. 33.4 - Prob. 3LOCh. 33.5 - Prob. 1LOCh. 33.6 - Prob. 1LOCh. 33.6 - Distinguish between the Errantia and Sedentaria.
Ch. 33.6 - Describe adaptations in leeches for feeding on the...Ch. 33.7 - Prob. 1LOCh. 33.7 - Prob. 2LOCh. 33.8 - Prob. 1LOCh. 33.8 - Prob. 2LOCh. 33.9 - Prob. 1LOCh. 33.9 - Prob. 2LOCh. 33.9 - Prob. 3LOCh. 33 - In the flatworm, flame cells are involved in what...Ch. 33 - Prob. 2UCh. 33 - Prob. 3UCh. 33 - Prob. 4UCh. 33 - Prob. 5UCh. 33 - Prob. 6UCh. 33 - Prob. 7UCh. 33 - Prob. 8UCh. 33 - Prob. 9UCh. 33 - Prob. 10UCh. 33 - Examples of decapods are a. centipedes and...Ch. 33 - Prob. 1ACh. 33 - Prob. 2ACh. 33 - Prob. 3ACh. 33 - Scientists studying the Chesapeake Bay have...Ch. 33 - Chitin is present in a number of invertebrates, as...Ch. 33 - Prob. 3SCh. 33 - Prob. 4S
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Are all flatworms parasite? What are some of the special adaptations seen in the parasiticclasses that enhance their ability to find and survive in a host?arrow_forwardThe only class or group of Annelid worms which possesses a permanent clitellum is the: Hirudina Cestoda Oligochaeta Platyhelminthes Permoclitellata All lack a permanent clitellum Polychaetaarrow_forwardDescribe and contrast the tegument of most turbellarians and the other classes of platyhelminths. Does the tegument provide evidence that trematodes, monogeneans, and cestodes form a clade within Platyhelminthes? Why?arrow_forward
- Which of the following classes includes the only type of echinoderm that has a calyx on a stalk? Echinoidea Holothuroidea Ophiuroidea Asteroidea Crinoideaarrow_forwardHow do terrestrial arthropods of the subphylum Hexapoda impact the world’s food supply? Provide at least two positive and two negative effects.arrow_forwardWhich group of flatworms are primarily external parasites of fish? a. monogeneans b. trematodes c. cestodes d. turbellariansarrow_forward
- Members of Chondrichfhyes are thought to be descended from fishes that had. a cartilaginous skeleton a bony skeleton mucus glands slime glandsarrow_forwardWhich of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrataarrow_forwardWhat structure differentiates Ectoprocts and Brachiopods from other Lophotrochozoa? Select one: 1-Complete digestive tract with two openings. 2- Fluid-filled coelom. 3- Triploblastic. 4- Suspension feeding via lophophore. 5- Trochophore larval stage. Please provide explanations in detail for the correct option as well as the incorrect options.arrow_forward
- Relative to asconoid organization in sponges the syconoid form exhibits smaller body size increased spongocel volume relative to pumping surface area reduced spongocel volume relative to pumping surface area larger body sizearrow_forwardDefine adaptation. How could you use a comparative approach to test whether mesoglea within a scyphozoan medusa was an adaptation for buoyancy? How could you use a different criterion to test whether the eyes of cubozoans were adaptive? Where would a comparative approach prove a better way to assess the adaptive values of a tegument in internal parasites: in tapeworms or nematodes? Why?arrow_forwardCnidarians may exhibit an “alternation of generations” in their entire life cycle. Describe the “alternation of generations” using the life cycle of a hydrozoan, Obelia.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College