cooltext26597238.jpg (13348 bytes) 
www.smithlifescience.com

CrayfishOrg.jpg (21464 bytes)

Unit 2 Diversity of Living Things

Chapter 10 Mollusks, Arthropods, and Echinoderms
Section 2 Arthropods




Last Updated    10/17/2010     10/8/2009     9/25/2009      9/23/2009     9/21/2009     9/20/2009     9/19/2009     9/18/2009     9/12/2009     9/11/2009     8/21/2009     8/19/2009     8/16/2009     8/17/2008      8/3/2008      5/11/2008      3/20/2008      4/23/2007      11/25/2006     11/10/2006      10/18/2006     9/13/2006      8/28/2006     8/18/2006      8/12/2006      6/20/2006      6/6/2006     5/13/2006      2/26/2006     1/20/2006      1/19/2006     1/17/2006      12/26/2005       12/22/2005      12/12/2005      12/3/2005      10/30/2005      10/15/2005     10/14/2005      10/8/2005     9/17/2005       8/27/2005      8/15/2005     4/12/2005      4/11/2005     4/10/2005      4/7/2005     4/3/2005      4/1/2005     3/20/2005      3/5/2005     1/14/2005     1/1/2005     2/7/2003     12/14/2002     12/9/2002

Created 12/9/2002
   

                                                                                          Google
 
Web www.smithlifescience.com

    sitesforteachers2.GIF (1707 bytes) 


Previous: Mollusks             Next: Insects   

Teacher Resources
     Student Extra Credit

 

10-2 Arthropods
Characteristics of Arthropods
Crustaceans
Arachnids

 

Day 1-2
Lecture.gif (2227 bytes) Arthropod: Fact or Fiction
readme.gif (802 bytes)  Arthropods Section 2 pages 335-342
Pencil.gif (434 bytes) RSG 10-2 Arthropods
Day 5
Magnify0b.gif - 341 Bytes Crayfish Dissection
Day 6
crayon0a.gif (328 bytes) Creatures From Planet X
Day 4
Magnify0b.gif (341 bytes) Crayfish External Investigation
 

 

 

  

Day 1
Topic  Arthropod Introduction
Objectives/ I can ...
Introduce the arthropod classes.
Identify, insects, arachnids, crustaceans, and myriapods.
List the main characteristics of arthropods.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
  Phylum Arthropoda 1:01
 Walking With Monsters: Arthropods  7:45 
  Insects and Arthropods  3:20
Invertebrate Vendors  7:40

Note02.gif (247 bytes) Arthropod Notes from the Biology Corner

 Pencil.gif (1165 bytes) Arthropod: Fact or Fiction

TEC
Resources
Note02.gif (247 bytes) Common Arthropods of the Jersey Shore
crayon0a.gif - 328 Bytes Arthropod Coloring

 

Day 2
Topic 10-2 Arthropods
Objectives/ I can ...
Identify chitin as the material that makes up the exoskeleton of an arthropod.
Define molting as shedding the exoskeleton when it becomes too large.
Describe how crustaceans, arachnids, and centipedes and millipedes differ.
List the special body parts of arthropods.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
Lecture.gif (2227 bytes)  Arthropod: Fact or Fiction Correct with class

Chalkboard.bmp (15654 bytes)
On the Board

Arthropods Classes: 4 Largest

Insects Grasshopper, Ant, Bee
Crustaceans Crab, Shrimp, Lobster, Crayfish, Pill Bug
Arachnids Spiders
Myriapods Millipedes and Centipedes

 Chalkboard.bmp (15654 bytes) On the Board Arthropod
Chitin: material that makes up the exoskeleton of an arthropod.
Molting: shedding the exoskeleton when it becomes too large.


Chalkboard.bmp (15654 bytes) On the Board

Arthropod Specialized Body Parts

Lobsters & crabs have large front claws. One claw crushes the other cuts.
Spiders have silk glands.
Antenna are used for touch and taste.

  Live King Crab  1:38
Giant Spider Crab Attacks  1:01
 Spiny Lobster Migration  4:55
 Coconut Crab  2:03
  Mantis Shrimp  1:29
  Harlequin Shrimp  2:26
  Giant Millipede  4:03
 

readme.gif (802 bytes)  Arthropods Section 2 pages 335-342

Pencil.gif (434 bytes) RSG 10-2 Arthropods

crayon0a.gif (328 bytes) Love a Lobster Make a lobster model, label the parts, create lobster cards of information.

TEC
Resources
Note02.gif (247 bytes) Arthropods
star.gif (2279 bytes) Arthropods: Insects, Arachnids, and Crustaceans

 

Day 3
Topic 10-2 Crustaceans, Arachnids, Centipedes and Millipedes
Objectives/ I can ...
Identify arthropods.
Identify specialized appendages of crustaceans.
identify characteristics of centipedes and millipedes.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
Centipedes and Millipedes  1:14
Giant Millipede  4:03
Millipede Walking  :15
Centipede Vs. Snake  1:52
Centipede Vs. Grasshopper Mouse  1:47

readme.gif (1442 bytes) Prentice Hall 338-342

Pencil.gif (1165 bytes) Workbook 143-144

star.gif (2279 bytes) Arthropod Crossword Puzzle

star.gif (2279 bytes) Find the Arthropods   Find 19 arthropods in the picture

TEC
Resources

 

Day 4
Topic  Crayfish
Objectives/ I can ...
To observe the physical characteristics of a crayfish.
To observe the movements of a crayfish.
Draw a crayfish.
Learn the name of crayfish body parts by labeling a diagram
.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
Lecture.gif (2227 bytes)  Looking At Ol' Crusty 
Background Information, Short History, and activities.
Crab Facts With Dr Nora
Life Cycle of Maryland Blue Crab
Blue Crab vs. Clam
  Crayfish Attack 2:24
  Crayfish Molting  1:11
  Crayfish External Anatomy 2:58
  Territortality and Crayfish  1:41

 Magnify0b.gif (341 bytes) Crayfish External Investigation

crayon0a.gif (328 bytes) Draw and label body parts using Crayfish Coloring Diagram.
You may complete the Crayfish Coloring Diagram for extra credit. 

TEC
Resources
Magnify0b.gif (341 bytes) Crab Investigation
Magnify0b.gif (341 bytes) Crayfish External Observation & Dissection
Magnify0b.gif (341 bytes) Internal Anatomy of the Crayfish   Internal diagram to label

 

Day 5
Topic  Crayfish Dissection
Objectives/ I can ...
To learn crayfish internal organs.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
 
Magnify0b.gif - 341 Bytes Crayfish Dissection by Holt Science
TEC
Resources

 

Day 6
Topic Spiders
Objectives/ I can ...
Learn fascinating spider facts
State several folkloric sayings and beliefs about spiders
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
crayon0a.gif (328 bytes) Creatures From Planet X
Provide characteristics but don't let kids know it is a spider. 
See what they draw.

Computer.gif (1114 bytes) Wolf Spider Under a Microscope  

  Camel Spider  1:35 
  Garden Spider  2:45
  Giant Garage Spider  3:03 
  Giant Porch Spider 5:10
  Funnel Web Spider  2:48
  Trapdoor Spider  :23
  Red Backed Toilet Spider  3:12
  White Tailed Spider  2:54

Note02.gif (247 bytes) Would You Believe: Spider Facts

Note02.gif (247 bytes) Fantastic Folklore

TEC
Resources
Earth.gif (6650 bytes) Under the Spell of Spiders

 

Day 7
Topic Spiders
Objectives/ I can ...
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework

Chalkboard.bmp (15654 bytes)
On the Board

Phylum Arthropod: Subphylum Chelicerata

Class Merostomata (Horseshoe Crabs) 5 species
Class Arachnida (Spiders, Mite, Scorpions etc.) 80,000 species
Class Pycnogonida (Sea Spiders) 1,000 species

 Chalkboard.bmp (15654 bytes) On the Board

Four Major Groups of Spiders
Method of Prey Capture

Chase prey wolf spiders
Hide in ambush trapdoor spiders
Snare prey in webs orb weavers
Pounce on prey jumping spiders

  Horseshoe Crab: The Sea Spider 6:05
  Dust Mites  1:26
  We Are Not Alone 3:09 Desert |
  Scorpion  :12
  Emperor Scorpion  2:56 
  Giant Centipede vs. Tarantula  1:50 
  Giant Centipede Eats a Mouse  4:53

readme.gif (1442 bytes) Pencil.gif (1165 bytes) Discover Spider Challenge  Factsheet and diagrams

crayon0a.gif (328 bytes)   Spider Mini-Book  Draw and color four pages of a spider's life cycle.

TEC
Resources
Note02.gif (247 bytes) Spider Information
Note02.gif (247 bytes) Spider Information 2

 

Day 8
Topic Poisonous Spiders
Objectives/ I can ...
Identify poisonous spiders.
State Goals
12.B.1a  Describe and compare characteristics of living things in relationship to their environment.
12.B.2b  Identify physical features of plants and animals that help them live in different environments.
Classwork-Homework
  Giant Tarantula  1:55
  Black Widow :48
  Black Widow: Deadly Mates  2:03
  Brown Recluse 2:15
  Hobo Spider Slideshow  1:25
  Yellow Sac Spider  2:33  

Pencil.gif (1165 bytes) Poisonous Spiders 
TEC
Resources

 



Teacher Resources

Pencil.gif (1165 bytes) Assignments    crayon0a.gif (328 bytes) Art Activity    Magnify0b.gif - 341 BytesLab      BookOpen.bmp (16686 bytes) Lesson Plan      braininjar.gif (1615 bytes)_Tests     IconMap.bmp (3402 bytes) Maps     Note02.gif (247 bytes) Resources     Earth.gif (6650 bytes) Web Sites     SchoolBus5.bmp (6174 bytes) Field Trips      Computer.gif (1114 bytes) Computer     bookpages.gif (1592 bytes) Book    Dice.bmp (3974 bytes) Games    star.gif (2279 bytes)Extra Credit     filmstrip.gif (6075 bytes)PPT     Video

ARACHNIDS
 Note02.gif (247 bytes)  Class: Arachnid 
ARTHROPODS
 Pencil.gif (434 bytes) Animal Adventures  Research page and world map
 Pencil.gif (434 bytes) Arthropod Crossword Puzzle
 Pencil.gif (1165 bytes) Arthropod: Fact or Fiction  50 True False questions
 Pencil.gif (434 bytes) Arthrpod Review Sheet   and Arthropod Review Sheet 2  Type in your answers and check them on line.
 Pencil.gif (434 bytes)  Bug-go   Bingo Game.  Good pictures and paragraphs of information.  Could make a Field Guide.
Player Game Cards
Card 1  Card 2  Card 3  Card 4  Card 5
Insect Line Drawings Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9
Information Sheets and Instructions
 Pencil.gif - 434 Bytes  Bug Profile Sheet
 Pencil.gif - 434 Bytes Don't Let the Bugs Bite  Crossword Puzzle
 Pencil.gif (434 bytes) Find the Arthropods   Find 19 arthropods in the picture
 Magnify0b.gif (341 bytes)  Arthropod Data Collection  Information to include on an arthropod report.
 Magnify0b.gif - 341 Bytes Let's Get Crabby  Worm, Crab, Cricket, Hermit Crab and Millipede
 crayon0a.gif (328 bytes) Arthropod Genetics  Construct imaginary arthropods by selecting dominant and recessive traits with genotypes and phenotypes.  Construct Punnett Squares determining traits of offspring.
 braininjar.gif (1615 bytes) Arthropod Worksheet    Arthropod Worksheet 2
 braininjar.gif (1615 bytes) Arthropod Quiz  McGraw-Hill online quiz
 filmstrip.gif (6075 bytes) Arthropod Slideshow
 Computer.bmp (3254 bytes) The Arthropod Story
Tour through the amazing evolutionary history of arthropods.
 Note02.gif (247 bytes) Arthropod Care Sheets  Walking Sticks, Praying Mantids, Cockroaches, Tarantulas, Crickets, Scorpions, Lighting Bugs, Caterpillars
 Note02.gif - 247 Bytes  Arthropod Information
 Note02.gif - 247 Bytes Arthropod Proverbs
 Earth.gif (6650 bytes) Arthropods: Animal Diversity
CENTIPEDES & MILLIPEDES
 Note02.gif (247 bytes) Centipede Diagram and Information  From Enchanted Learning
 Note02.gif (247 bytes) Centipede Pictures Good Pictures Desert, House, Garden Centipede
 Note02.gif (247 bytes)  Millipede Diagram and Information  From Enchanted Learning
 Earth.gif - 6650 Bytes  Centipedes,  Centipedes are long, flattened, many-segmented arthropods. Most of the segments have a pair of legs.
COLLECTIONS
 Magnify0b.gif (341 bytes) Field Collection Record
 Note02.gif (247 bytes) Thoughts on Collections  Alternate project ideas
 Note02.gif (247 bytes) Zoo Display Label
CRABS
 crayon0a.gif (328 bytes) Crab Life Cycle page 29
 Magnify0b.gif (341 bytes) Blue Crab Observation
CRAYFISH
 Note02.gif (247 bytes)  Crayfish Digestive and Excretory System Diagram
 Note02.gif (247 bytes) Crayfish Internal Structure  Diagram
 Note02.gif (247 bytes)  The Crayfish by T.H. Huxley  An introduction of the study of Zoology.
 Earth.gif - 6650 Bytes  Crayfish Corner   Information on appearance, behavior, and anatomy
 Earth.gif (6650 bytes)   Crayfish Fights  Agnostic Behavior in crayfish.
 Earth.gif (6650 bytes)   Crayfish On Line Diagram  Checks and gives you a grade.
 Earth.gif - 6650 Bytes  Crayfish Dissection Review  Internal and external views of a crayfish
 Earth.gif - 6650 Bytes  Crayfish Home Page  Everything you want or need to know about crayfish.
 Earth.gif - 6650 Bytes  Crayfish Recipes  The edible part is the tail. The typical way to eat crayfish is boiled with secret ingredients.
 Earth.gif - 6650 Bytes  Crayfish Respiration
 Earth.gif (6650 bytes) Crayfish Review  Images to study after dissection.
 Earth.gif - 6650 Bytes Rusty Crayfish Fact Sheet  Rusty crayfish (Orconectes rusticus) have invaded portions of Minnesota, Wisconsin, Ontario, and many other areas. Although native to parts of some Great Lakes states, rusty crayfish have spread to many northern lakes and streams where they cause a variety of ecological problems.
CRUSTACEANS
 Earth.gif (6650 bytes) Class Crustaceans
DAPHNIA
 Note02.gif (247 bytes) Water Flea Anatomy   Anatomy of a daphnia
 Earth.gif (6650 bytes)  Daphnia  This animal is probably more common than ants and it most likely lives in your neighborhood. It's a fascinating animal to collect and observe, and you can even view its heart beating inside the body.
DECAPODS
 Earth.gif (6650 bytes) Order Decapods  Shrimp. Lobsters, Crabs
 DISSECTION
 Magnify0b.gif - 341 Bytes Crayfish Dissection
 Magnify0b.gif - 341 Bytes Crayfish Dissection by Holt Science
 Magnify0b.gif (341 bytes) Crayfish: Internal Anatomy  Step-by-step directions with a checklist.
FIELD TRIPS
 SchoolBus5.bmp (6174 bytes)Bugs Caught in the Web 
FLY (DIPTERA)
HERMIT CRAB
 crayon0a.gif (328 bytes)  Hermit Crab Coloring Page
HORSESHOE CRAB
 crayon0a.gif (328 bytes)   Build a Horseshoe Crab  Choose K-12 Education, then Marine Science Lesson Plans, Register your email address,  finally choose Build a Horseshoe Crab
 Note02.gif (247 bytes)  Horseshoe Crab Information
KEYS & GUIDES
 Note02.gif (247 bytes) Bug Club: Key to Insect Orders
 Note02.gif - 247 Bytes  Bug ID   An easy to use Insect Identification Key
  Note02.gif - 247 Bytes  PEERS Spider Identification Chart   This database has been developed to help with the identification of the species of spiders that will most likely be collected in the Blue Mountains Region of Northeast Oregon. We realize that it is not a complete resource. We hope to continue to add to the database in the future. Thank you for taking the time to search this resource.
 Note02.gif (247 bytes)   Pond Life Identification Guide Kananaskis County
  Note02.gif - 247 Bytes  Spider Location Chart and Pictures   This table, the drawings of spiders and webs below will make it easier to identify a spider. Together with the thumbnail page you can find the family or your spider.
LOBSTERS
 Pencil.gif (434 bytes) Fishin' for Facts: The Lobster    Earth.gif (6650 bytes) Lobster Parts
Love a Lobster Choose K-12 Education, then Marine Science Lesson Plans, Register your email address,   finally choose Love a Lobster
 Earth.gif (6650 bytes)   A Lobster's Life  Early years, Molting, Diet, Predators, Courtship & Mating,
 Earth.gif (6650 bytes)  Lobster Parts
PILLBUGS
BookOpen.bmp (16686 bytes) Exploration of Pillbugs 5 day 18 page lesson plan
SCORPIONS
 Earth.gif (6650 bytes)  Desert Scorpion  Scorpions are venomous arthropods of the class Arachnida and are considered relatives of the spiders, mites, ticks and harvestmen. There are approximately 1,300 species of scorpions worldwide, characterized by an elongated body and a segmented tail that is tipped with a venomous stinger.
 Earth.gif (6650 bytes) Giant Water Scorpion Walked on Land
 Earth.gif (6650 bytes) Gordon's Scorpion Page
 Earth.gif - 6650 Bytes  Scorpions  Scorpions are venomous arthropods of the class Arachnid and are considered relatives of the spiders, mites, ticks and harvestmen. There are approximately 1,300 species of scorpions worldwide.  Information on the range, habitat description, life cycle of scorpions.
 Earth.gif (6650 bytes) Scorpions Scorpion facts.
 Earth.gif (6650 bytes) Sea Scorpion: Fact File
SPIDERS
 Pencil.gif (434 bytes)  Spider Activities  7 Activities. Includes rubric
 Pencil.gif (1165 bytes) Spider Parts  Label the spider diagram    Answers
 Magnify0b.gif (341 bytes) Spider Tools  Directions on how to make a spider rake and a "Pooter".
 Magnify0b.gif (341 bytes)  Spider Vivarium   Students study spiders by observing them in a "close to natural" state; they describe the spiders' physical features and their eating, mating, and reproducing behavior, if possible from observations. Spider Tools
 crayon0a.gif (328 bytes)   Creatures from Planet X  Introduction to spiders.  Draw a creature using spider characteristics.   Profile of Creature
 crayon0a.gif (328 bytes) Creepy Crawly Spider Bracelet
 crayon0a.gif (328 bytes)   Spider Mini-Book  Draw and color four pages of a spider's life cycle.
 Note02.gif (247 bytes)   Collecting, Keeping, and Caring For Spiders  and  Spider Tools
 Note02.gif (247 bytes)   Spider Facts   Daddy-Long-Legs; Zebra Spider; House Spider; Orb Web Spider; Spider Diagram
 Note02.gif - 247 Bytes Spider Information
 Note02.gif - 247 Bytes Spider and Insect Comparison
 Computer.bmp (3254 bytes) Spiders Are Not Bugs Jumping Spider Tarantula Wolf Spider
 Earth.gif - 6650 Bytes Anatomy of a Spider   Great pictures, diagram, and information about spiders
 Earth.gif - 6650 Bytes Class Arachnida   The class Arachnida, pronounced "a-RACH-ni-da" includes the orders for spiders, mites, scorpions, and other arthropods with eight legs. The order Araneae is pronounced "ah-RAY-ne-ah". Araneae is the Latin word for spider. HUGE SITE OF INFORMATION
 Earth.gif - 6650 Bytes  Daddy-Long Legs   These almost spiders have a small body and very long legs. Information on hunting methods and prey, breeding, and enemies.
 Earth.gif (6650 bytes)  Hunters: Land Rovers and Sit and Wait
 Earth.gif (6650 bytes) Introduction to Wolf Spiders
 Earth.gif - 6650 Bytes  Other Spiders   Here's some information on the most common spiders world-wide. Click on the picture of the spider to go that page.
 Earth.gif (6650 bytes) Jumping Spiders: A Spider's Taste for Blood  An East African Jumping spider doesn't have the mouthparts to pierce vertebrate skin.  It eats mosquitos that have just dined on a vertebrate.
 Earth.gif - 6650 Bytes  Spider Location Chart and Pictures   This table, the drawings of spiders and webs below will make it easier to identify a spider. Together with the thumbnail page you can find the family or your spider.
 Earth.gif - 6650 Bytes  Spiders: Insect Zoo   Who needs them?  We do--without them, insect populations would be totally out of control. They are the mightiest hunters of the arthropod clan; with or without their famous webs, their methods succeed against other insects who have a great advantage over the wingless spiders--flight.
 Earth.gif (6650 bytes)   Trap Door Spider   Habitat, Food & Hunting, Breeding, Enemies, Distribution, and Key Facts
STOMATOPODS
Earth.gif (6650 bytes)  What Are Stomatopods?   Stomatopods are predatory crustaceans that live in the shallow waters of tropical and subtropical seas.

 

Student Extra Credit

 star.gif - 2279 Bytes Arthropod Extra Credit star.gif - 2279 Bytes

 star.gif - 2279 Bytes  Adopt a Butterfly   Choose a butterfly and complete classification information, habitat location, food requirements, and other information. Use this report template.
 star.gif - 2279 Bytes  Adopt an Insect   Choose an insect and complete classification information, habitat location, food requirements, and interesting facts.
 star.gif (2279 bytes) Arthropods: Insects, Arachnids, and Crustaceans 2 page article and questions
 star.gif (2279 bytes) Arthropod Trivia, Research, and Activities  Answer the Trivia questions or complete an activity.
from Butterfly Pavilion
 star.gif - 2279 Bytes Bug Trivia  Find the answer to bug records.
 star.gif - 2279 Bytes  Forensic Entomology: What the Blowfly Saw   The decomposed corpse of a Marine is found in a rain forest just off the highway in Oahu, Hawaii.  Read the paragraph and fill in the table indicating when the three insects arrive or leave the body. Then write a paragraph  explaining when the Marine died, and how they know.
 star.gif - 2279 Bytes  Fruit Fly Reproduction   Because of their rapid life cycle, fruit flies are perfect for observation. In just two weeks time, you'll be able to observe the birth, growth, reproduction, and death of these organisms.  Bring your jar of fruit flies to school to show me!
 star.gif - 2279 Bytes  Insect Mania   Insect Collection, Insect Jeopardy, Insect Poster, Insect Book, and Insect fact cards.  Choose the project you like!
 star.gif - 2279 Bytes  Insect Scavenger Hunt   See if you can find examples of the insects on the list.  Put them in baggies and bring them to school.
 star.gif (2279 bytes) Invertebrate Cards  Cut out pictures and glue on a blank notecard. Label each invetebrate picture.  Find five facts about each invertebrate  for the back of thee card.
 star.gif (2279 bytes) Lobster   Go to the web sites to find out more about lobsters.
 star.gif - 2279 Bytes  Praying Mantis Drawing & Diagram    Directions and drawing paper in our classroom.
 star.gif (2279 bytes)  Spider Mini-Book   Draw and color four pages of a spider's life cycle.
 star.gif - 2279 Bytes  Spiders OnLine Worksheet   Challenge Activity!!! Click on the links to go to the Web page.  Use the information you find to answer questions.
 star.gif - 2279 Bytes  Spider Vivarium   Students study spiders by observing them in a "close to natural" state; they describe the spiders' physical features and their eating, mating, and reproducing behavior, if possible from observations.

 

Previous: Mollusks            Next: Insects