31. Invertebrates

Echinoderms

ECHINODERMATA GENERAL CHARECTERS

 Many species possess an internal calcareous skeleton and spiny dermal projections. 

 No. Many species do possess an internal calcareous skeleton, but this is not the only true statement. 

 Larval forms show evidence of bilateral symmetry, which is mostly lost in the adult form. 

 No. Larval echinoderms do show evidence of bilateral symmetry, but this is not the only true statement. 

 One of the clades in this phylum is Asteroidea, which includes the sea stars and sea daisies. 

 No. This is the clade to which sea stars and sea daisies belong, but this is not the only true statement. 

 All possess a water vascular system, which permits movements via tube feet. 

 No. All echinoderms do possess a water vascular system, but this is not the only true statement. 

 All of the listed responses are correct. 

Think about the unique characteristics of echinoderms.

Which of the following statements about the phylum Echinodermata is true?

Short Video: Echinoderm Tube Feet

Echinoderm Facts

 No. Sea stars have a stomach and digestive glands. 

 No. Gametes are produced in gonads, as in most animals. 

 keeping all parts of the body moist at low tide 

 No. This is not a function of the water vascular system. 

What part of the water vascular system can you see if you pick up a sea star?

The water vascular system of a sea star functions in __________.

Echinodermata - Basic Characteristics

The Spiny World of Echinoderms! | JONATHAN BIRD'S BLUE WORLD

Which of the following combinations of phylum and description is incorrect?
a. Echinodermata—bilateral symmetry as a larva, coelomate
b. Nematoda—roundworms, pseudocoelomate
c. Platyhelminthes—flatworms, gastrovascular cavity, acoelomate
d. Porifera—gastrovascular cavity, coelomate

The water vascular system of echinoderms
a. functions as a circulatory system that distributes nutrients to body cells
b. functions in locomotion and feeding.
c. is bilateral in organization, even though the adult animal is not bilaterally symmetrical.
d. moves water through the animal’s body during filter feeding.

 No. Unlike many other members of the phylum Echinodermata, sea cucumbers do not have spines. 

 No. The endoskeleton in sea cucumbers is very reduced compared to other echinoderms. 

 They are elongated in the oral-aboral axis. 

 No. This structure gives them the elongated appearance from which they get their common name. The feature makes them look very different from other echinoderms. 

 They move by serpentine lashing of their arms. 

 No. This is a characteristic of brittle stars. 

What system is unique to echinoderms?

What is one visible feature that makes it easy to identify sea cucumbers as echinoderms?

Unit 14 - Echinoderms and Chordates

Learn the toughest concepts covered in Biology1&2 with step-by-step video tutorials and practice problems by world-class tutors 

Jason

General Biology

https://static.studychannel-prd.pearsonprd.tech/courses/biology/thumbnails/biology

#FFFFFF

Hillary Wilson

MooMooMath and Science

Jason Amores Sumpter

7activestudio

VanceBiology

BlueWorldTV

1. Introduction to Biology

2. Chemistry

3. Water

4. Biomolecules

5. Cell Components

6. The Membrane

7. Energy and Metabolism

8. Respiration

9. Photosynthesis

10. Cell Signaling

11. Cell Division

12. Meiosis

13. Mendelian Genetics

14. DNA Synthesis

15. Gene Expression

16. Regulation of Expression

17. Viruses

18. Biotechnology

19. Genomics

20. Development

21. Evolution by Natural Selection

22. Evolution of Populations

23. Speciation

24. History of Life on Earth

25. Phylogeny

26. Prokaryotes

27. Protists

28. Plants

29. Fungi

30. Overview of Animals

32. Vertebrates

33. Plant Anatomy

34. Vascular Plant Transport

35. Soil

36. Plant Reproduction

37. Plant Sensation and Response

38. Animal Form and Function

39. Digestive System

40. Circulatory System

41. Immune System

42. Osmoregulation and Excretion

43. Endocrine System

44. Animal Reproduction

45. Nervous System

46. Sensory Systems

47. Muscle Systems

48. Ecology

49. Animal Behavior

50. Population Ecology

51. Community Ecology

52. Ecosystems

53. Conservation Biology

[BOOK BIO] CLUTCH

Porifera and Cnideria

Lophotrochozoans

Ecdysozoans

General Chemistry

Jules

Study the key concepts of Physics with descriptive videos, questions, and more

Physics

Patrick

Financial Accounting

Brian

Dive deep into Psychology with videos, practice problems, and more.

Psychology

Microeconomics

The first in a two-course sequence introduces the basic structure and functions of the human body

Anatomy & Physiology

College Algebra covers algebraic topics and skills necessary to succeed in college-level math

College Algebra

Organic Chemistry

Johnny

Genetics

Kylia

GOB Chemistry

Microbiology

Cell Biology

Analytical Chemistry

Study topics incliding trogonometric functions, identities and equations, solutions of triangles, complex numbers, and other topics as time permits

Trigonometry

Learn the toughest concepts covered in Precalculus with step-by-step video tutorials and practice problems by world-class tutors

Precalculus

Biochemistry

Macroeconomics

Chemistry

Biology

Math

Business

Social Sciences

Michelle Barry Franco

Building Great Presentations

Eric Zackrison, PhD

Critical Thinking And Problem Solving

Sam Bennett

Embracing Times Of Uncertainty

Nicole Tetreault, PhD

Emotional Intelligence Basics

Eugene Choi, PharmD

Enhancing Your Critical Thinking Skills

Jason Richardson, PsyD

Habits To Win Every Day

Alyssa Lowery, PhD

Having Powerful Advanced Conversations

Don Gilman, EdD

How To Influence & Persuade

Amy Matthews

Leadership Skills For Rising Stars

Listening To Lead

Michael Shermer, PhD

Making Decisions Under Uncertainty

Lynne Hurdle

Mistakes To Avoid When Resolving Conflict

Michael Veltri

Overcoming Decision Making Traps

Mike Vardy

Prioritizing Effectively

Secrets Of Effective Prioritization

Strategies To Build Up Your Creativity

Tools For Decision Making

Tutti Taygerly

Unleash And Advance Your Creativity

Winning Collaboration: How To Work More Effectively With Different Personalities

Writing Emails People Want To Read

Critical Thinking

Self Management

Digital Literacy

Collaboration

Communication

Analytical Thinking

Leadership

Flexibility/Adaptability

Innovation

Eric Zackrison

Nicole Tetreault

Dive deep into Python with videos and more.

Introduction to Python

Arianne Dee

Agile Project and Product Management

Agile & Product Management

Mariya Breyther 

Introduction to Microsoft Power BI

Microsoft Power BI

Chris Sorensen

Data Analysis Fundamentals with Excel

Data Analysis - Excel

Chris Sorensen & Ammul Shergill

Getting Started with  and Cryptocurrency

Introduction to Blockchain

George Levy

Learn Enough HTML, CSS and Layout to be Dangerous

HTML, CSS & Layout

Lee Donahoe & Michael Hartl

Learn Enough JavaScript to be Dangerous: A Tutorial Introduction to Programming with JavaScript

Introduction to JavaScript

Michael Hartl