Saturday, September 26, 2015

Apologia Biology Module#12

ALWAYS:  

  • know that when you see the word 'read' you can access the audio version on Audible on the iPod nano
  • have your book open as you listen to the module on Audible so that you can see the illustrations etc. and so you know when/where to stop 
  • Read each section and do the OYO as you get to them.  Do not continue reading (listening) until you have completed the OYO questions and checked your answers against those at the end of the module. 
  • Spend 5-15 minutes on Quizlet to work on the vocabulary words for each section and the previous section's words as you complete each reading assignment.
  • complete the study guide for each module
  • if you don't understand a concept/section/topic go to the bottom of this post and check the 'extra help' links.  If something is very interesting to you, check the 'interesting links' section for that module at the bottom of this post.  
Dissecting tools and tray that came with your dissection kit
 Crayfish specimen
 Magnifying glass
 Insect specimens (collected from outside or from someone’s insect collection)

Module#12 - ArthropodsArthropods!  What are they???  Watch the first couple of videos to find out.  There are so many varieties that some don't even seem to fit in the same phylum.
►In this post, there are several videos that did not have an embed code, so I just posted the link. 

Here's a review of a few terms if you are still not quite familiar with them.
  • Dorsal - referring to the back, or it might seem to be the top if the animal is not upright like a human, but it is its back.  Like a dorsal fin on the back of a fish.
  • Ventral - referring to the front, or belly-side of an organism.
  • Anterior - in front of, or the end that contains an organism's head.
  • Posterior - in back of, or the end that contains an organism's tail.
(Source)
A shark has an anterior dorsal fin and a posterior dorsal fin.  This indicates which is in front of the other; they are both on its back.
Something can also be "anterior to" another body part, meaning it is in front of it, and "posterior to" another body part would mean it is in back of it.


Remember the order of the biological classification:
Kingdom, Phylum, Class, Order, Family, Genus, Species.
In this module, you will study phylum Arthropoda as well as a few classes and orders within this phylum.
read 361-364
(1) p. 361-364General Characteristics of Arthropods
There is not a video that goes over the 5 characteristics, but here is what I could find.


read 365-372 draw 12.2, 12.4
(2) p. 365-371Class Crustacea:  The Crayfish
Growing up, I always called these things crawdads.  =)
A crayfish swimming, trying to catch food.
►Learn the parts of a crayfish by studying the names of the parts on p. 365.
►Then with your book open to page 365, look in your book as the highlighted parts in this video are named.  Then go back and watch the video again and see if you can name the highlighted part before the words appear on the screen. The cephalothorax is called the thorax in this video. Actually, the head and thorax together make a cephalothorax.  
Around 2:10, the parts named are the ones labeled on p. 373 in the dissection.  Look there for comparing to the video.

ex. 12.1 (crayfish dissection) 
(3) p. 371-372, Other Crustaceans
Lobster
Shrimp
►See baby shrimp being born around 0:50 seconds.

Crab at Costa Rica
Watch this crab run!

Barnacles "sweeping" the water to gather any plankton floating about.

(4) p. 373-375Crayfish Dissection
►Draw and label Figures 12.2 (p. 365) and 12.4 (p. 368)
►At this website, click on each picture to enlarge and compare the labeled parts on the website to the labeled parts in the pictures in your Biology textbook on pages 365, 367, and 368.
Take your time in doing this.  
• If you'd like to watch a dissection, here is the External Anatomy and the Internal Anatomy.
• Also see the class dissecting crayfish at Applie's Place

read 376-379
(5) p. 376-379Class Arachnida (Spiders!)
Again, there are no videos that deal w/ the 5 characteristics of arachnids, one of which is that they have a cephalothorax instead of a separate head and thorax like insects.  So spiders only have two body parts while insects have three.  Insects and spiders both have an abdomen.
Trapdoor Spider

read 380-385 draw 12.9

(6) p. 380Classes Chilopoda and Diplopoda

 Giant Centipede (has 1 set of legs on each body segment)
► Watch this Millipede (has 2 sets of legs on each body segment)


(7) p. 381-385Class Insecta
Grasshoppers breathe through spiracles, tiny holes along the abdomen.  There is one on each section.  In this video, they look like little dark dots.
Complete Metamorphosis
4 stages:  egg, larva, pupa, adult
The embedding was disabled by the person who posted these videos, so you will have to click on the links to watch.  These are simply amazing!!!
Monarch butterfly laying eggs
Monarch caterpillar growing
Monarch caterpillar changing into chrysalis
Monarch butterfly metamorphosis 



Incomplete Metamorphosis
3 stages:  egg, nymph, adult
Preying Mantis life cycle



read 385-389 ex. 12.2

(8) p. 385-388A Few Orders in Class Insecta

Order Hymenoptera:  Ants, Bees, and Wasps ("social" insects - live in colonies)


Order Coleoptera:  The Beetles
Bombardier Beetle


Giant Waterbugs carry their eggs on their backs.
Whirligig Beetles


(9) p. 389, Experiment 12.2, Insect Classification
Here are a couple of helpful links:
BugGuide.net
What's that Bug?

complete study guide
study and turn in lab book
take module #12 test



Interesting links related to Module #12
Great web site which shows man’s attempt at copying God’s exoskeleton design.The robotic extended walker is a six-legged, pneumatically powered exoskeleton.If your student is interested in robotics, this page will thrill him or her.

UC Berkeley researchers attempt at developing a robotic exoskeleton that can enhance human strength and endurance is shown. This one is interesting in that it is a post 9/11 development designed to help firefighters climb stairs.

Have you ever wanted to jump like a grasshopper? According to the manufacturer, this personal vehicle designed for the 21st century will have “you trotting four-minute miles without tiring and scrambling up a mountain like an ATV.”
Links that contain extra help for the topics in Module #12


An insect's exoskeleton (integument) serves not only as a protective covering over the body, but also as a surface for muscle attachment, a water-tight barrier against desiccation, and a sensory interface with the environment.It is a multi-layered structure with four functional regions: epicuticle, procuticle, epidermis, and basement membrane.This site is college-level look at this amazing structure.

Chitin is a white, horny substance found in the outer skeletons of crabs, and lobsters and in the internal structures of other invertebrates.It is a polysaccharide consisting of units N-Acetyl Glucosamine and its highly crystalline structure accounts for its poor solubility.This page will introduce the student to this important biological compound.

Page contains colorized, computer-enhanced, electron microscopic views of insects.The compound nature of the insect eye can be plainly seen on these colorized plates.

This wonderful little page has some great crayfish facts, pictures, and links.There is even information on the care and feeding of the little buggers.

Click on the name of a structure to see a picture with that structure pointed out.

Online tutorial site which allows students to identify anatomy and provides extended learning opportunity regarding the crayfish.If you are wondering what a structure is, this site is a great place to start.

Super page! Well worth the look with multiple links to spider information and facts.

Spider silk is an extremely strong material and is on weight basis stronger than steel. It has been suggested that a pencil thick strand of silk could stop a Boeing 747 in flight.This awesome site explains the process of silk spinning.

Another article on the wonders of spider silk.

How do spiders build a web? It is an engineering marvel.If you can look at this page and still believe that spiders just evolved and learned to spin webs by random chance, I have a bridge and some swamp land to sell you.

Do spiders ever catch anything besides bugs? There is one spider that is large enough to catch small birds.This page has multiple links at the bottom regarding some very unusual spiders.

Millipedes have 4 legs per segment.Millipedes are docile herbivores and decomposers.Millipedes have rounder bodies than centipedes.Millipedes are not poisonous.

Insects are an interesting group.This fantastic web page from Animal Diversity Web provides 54 pages of pictures and background information that your student should find fascinating.Contains evolutionary content.

Insects have an elaborate system of interconnecting tubes called tracheas. These tubes are connected to the outside through a series of small holes in the exoskeleton called spiracles. The network of tracheae is so complex and thorough that air runs throughout the body, providing oxygen to all tissues! Air goes directly to the tissues, where oxygen and carbon dioxide are directly exchanged with the cells.

Hemolymph (or haemolymph) is the blood analogue used by all arthropods and most mollusks that have an open circulatory system.This page provides the components of this interesting fluid.

Circulation, metabolism, respiration, and excretion – every system that makes an insect a living thing is discussed.Wonderful resource for this Module.

Great graphic of complete metamorphosis.Be sure to click the back button on this page for more information.

Great graphic of incomplete metamorphosis.Be sure to click the back button on this page for more information.

Beetles are an interesting group of insects.This fantastic web page from Animal Diversity Web provides seven pages of pictures and background information that your student should find fascinating.Contains evolutionary content.

Another page from Animal Diversity Web.This web page from Animal Diversity Web provides five pages of pictures and background information that your student should find interesting.Contains evolutionary content.

Ants, bees, and wasps are includes in this Order.They are an amazing group.This web page from Animal Diversity Web provides five pages of pictures and background information.Contains evolutionary content.

The butterflies and moths are found in this Order.Animal Diversity Web provides seventeen pages of pictures and background information that should help your student better understand this order.Contains evolutionary content.
Advanced topics related to Module #12


This site helps the student investigate the Phylum.Great pictures and sound bites on this site.Contains evolutionary content

This site is a college level course tutorial designed to inform the students about the anatomy and physiology of insects.It has excellent graphics and explains the structures form and function in detail. Contains evolutionary content.

A web site on chitinL it's chemistry and uses.

Apologia Biology Module#11

ALWAYS:  

  • know that when you see the word 'read' you can access the audio version on Audible on the iPod nano
  • have your book open as you listen to the module on Audible so that you can see the illustrations etc. and so you know when/where to stop 
  • Read each section and do the OYO as you get to them.  Do not continue reading (listening) until you have completed the OYO questions and checked your answers against those at the end of the module. 
  • Spend 5-15 minutes on Quizlet to work on the vocabulary words for each section and the previous section's words as you complete each reading assignment.
  • complete the study guide for each module
  • if you don't understand a concept/section/topic go to the bottom of this post and check the 'extra help' links.  If something is very interesting to you, check the 'interesting links' section for that module at the bottom of this post.  
Microscope
 Prepared slide: sponge
 Prepared slide: Hydra
 Prepared slide: planarian
 Colored pencils
 Natural sponges (optional)
 Dissecting tools and tray that came with your dissection kit
 Earthworm specimen

Module #11 - Invertebrates
read 329-331
(1) p. 329-331, Symmetry First let's learn a little about symmetry.  If something is symmetrical, it is usually thought of as being the same on both sides.  There is actually more than one type of symmetry.
  • Spherical symmetry is when an organism can be cut into two identical halves by any cut that runs through its center.  A ball has spherical symmetry.  That's easy, right?
  • Radial symmetry is when an organism can be cut into two identical halves by any longitudinal cut through its center.  This might be from the top, any cut.  Like an oatmeal box can be cut from the top by any cut running straight down through the center.
  • Bilateral symmetry is when an organism can be cut into two identical halves by a single longitudinal cut (only one option, not "any longitudinal cut" as in radial symmetry) along its center which divides it into right and left halves.
(Source)
If you think about the names of these types of symmetry, you can easily see why they are named this way. A lot of things have bilateral symmetry.  You can probably look around and see a few things right off.  YOU even have bilateral symmetry.  Probably not exactly, as the two sides of everyone's faces are not an exact replica.  So these symmetry distinctions are not perfect.  Your internal organs are not the same on both sides of your body, either. Notice the terms on the crayfish above:
  • Dorsal - referring to the back, or it might seem to be the top if the animal is not upright like a human, but it is its back.  Like a dorsal fin on the back of a fish.
  • Ventral - referring to the front, or belly-side of an organism.
  • Anterior - in front of, or the end that contains an organism's head.
  • Posterior - in back of, or the end that contains an organism's tail.
A shark has an anterior dorsal fin and a posterior dorsal fin.  This indicates which is in front of the other; they are both on its back. Something can also be "anterior to" another body part, meaning it is in front of it, and "posterior to" another body part would mean it is in back of it.
read 331-335 ex. 11.1
2)  p. 332-335a, Phylum Porifera:  The Sponges Did you know that sponges are animals?  Really!  They are not plants.  They can't think; they have no internal organs, no blood, no eyes or ears, but they can reproduce, digest food, and protect themselves. If you have a sponge from the ocean, it is no longer living.  It would need to stay in the ocean in its environment to be able to eat and stay alive. How a sponge eats:
read 335-342 ex. 11.2
(3)  p. 335-341, Phylum Cnidaria There are 2 Multi-media Companion CD videos to watch for this section. Members of this phylum have two basic forms, polyp and medusa.
  • In the polyp form, the cnidarian (nih dahr' ee un) is tubelike with a mouth and tentacles at one end, and a basal disk at the other.  A basal disk just means it is circular at the base, often used for attaching itself to something, and there is no opening.  Like a stalk of celery.  
  • In the medusa form, it is free-swimming, with a bell-shaped body and tentacles.  (You may have heard of Medusa from Greek mythology -- ewww!)  It is in this form that we often think of the jellyfish, although a jellyfish has a polyp stage too.
►See diagram of a jellyfish life cycle.
The members of phylum Cnidaria have some characteristics that are common to all members of this phylum. Epithelium, mesoglea, and nematocyts, and more.  Read p. 356-357 to understand what they are. If you've ever been stung by a jellyfish, you'll easily understand about nematocysts.  I've been stung by one, but it was mild thankfully.  I was in the Gulf of Mexico.  The waters there are so warm!  But where we were, there were plenty of jellyfish.  They looked like clearish-white blobs, aimlessly floating around under the surface of the water.  We loved the warm water!  But didn't stay in long because of the jellyfish.  =( Cnidarians do not all sting because of being touched.  Some will only sting because of a chemical reaction. jellyfish or a hydra will sting anything they touch.  A sea anemone (uh nim' uh nee)will only sting because of a chemical reaction.  For this reason, it will not sting a clownfish for example.  Remember in Finding Nemo, clownfish would live IN a sea anemone.  Click for a video of nematocysts firing.
read 342-347
(4) p. 342-347, Phylum Annelida This phylum is made up of worms.  There are quite a few kinds of worms, so many in fact, that this phylum is made up of only one type - the segmented worm.  A worm that looks as if it is in segments, or little sections.  An earthworm is perhaps the most common; at least it's what I think of when I think of a segmented worm.  Which I do not think of very often!  =) An earthworm has an anterior end, and a posterior end.  The anterior end is where the mouth is, and is usually a little more pointed.  The clitellum is located nearer to this end.  The posterior end is where the, um... posterior is located!  =D (Look back up at the bilateral symmetry of the crayfish to see "anterior" and "posterior."   Also know that "dorsal" fins are on the backs of fish, because "dorsal" means back.) Just looking at the parts of an earthworm makes one realize there is much more to the earthworm than one might think!  Again, I marvel at the Creator and His designs.  =)
I could not find a video that goes over the feeding habits of earthworms, or the respiratory, circulatory, and reproductive systems. So I guess you'll have to study.  < gasp! >  =D Writing down your vocabulary words as you go will help a lot. Here's a video of a close up.  You can see the setae, which are little bristles.  You may have felt them before.  This is what an earthworm uses to help him move. 
read 347-350 ex. 11.1 (worm dissection here and here)
(5) p. 347b-350a, Experiment 11.3Earthworm Dissection Earthworm Anatomy
After the dissection:
-Squirmin' Herman the Worm - review the parts, then do the quiz. (easy)
-See if you can label the parts of this worm(a little harder)

read 350-352 ex. 11.4
(6) p. 350-352, Phylum Platyhelminthes:  The Planarian Wow, planarians are really flat!
Planarians have bilateral symmetry.
read 352-356
(7) p. 352b-354, Phylum Nematoda This phylum is made up of parasites.  The most common name for one parasite is ringworm. Another is Trichinella spiralis, worms that live in the intestines of pigs and certain other game animals.  These can only be gotten rid of by extremely cold or extremely hot temperatures.  This is why it is important to practice careful handling of raw meat, and cooking it thoroughly. In the Old Testament, there were certain laws that may seem drastic to us today.  They were not allowed to eat pork, for instance. Leviticus 11:7 says, "And the swine, though he divide the hoof, and be clovenfooted, yet he cheweth not the cud; he is unclean to you."   But these laws were for protection.  God knew that people then did not have the means we do today to ensure correct processing of meat.

(8) p. 354b-356, Phylum Mollusca
This phylum contains many organisms besides snails, such as clams, oysters, squid, etc.
Snails are a good example.
Study your textbook for the different parts of a snail, then watch the snail use its radula to eat lettuce. 

complete study guide



Interesting links related to Module #11
Virtual tour of the famed Monterey Bay Aquarium.Site includes live-feed camera images and video of the creatures studied in Module 11.Contains evolutionary content.

Great image of this fascinating coral colony.Picture is worth the peek.

Great set of lighted pictures of jellyfish.This site really helps the student appreciate the beauty of this group of organisms.
Links that contain extra help for the topics in Module #11


Site provides the student with multiple links to different sites regarding animal classification and characteristics.Contains evolutionary content.

Sponges are a diverse group of sometimes common types, with about 5000 species known across the world. Sponges are primarily marine, but around 150 species live in fresh water. Sponges have cellular-level organization, meaning that that their cells are specialized so that different cells perform different functions, but similar cells are not organized into tissues and bodies are a sort of loose aggregation of different kinds of cells.This awesome web page from Animal Diversity Web provides a detailed look at the phylum and its organisms.

Sponges are supported by either spicules or spongin.This page shows the composition of and explains the function of spicules and spongin.

A sponge is typically separated into three layers: the outer layer is the epidermis, the inner layer is the inner cells, and the mesenchyme in between these two layers.Amebocytes are cells that take care of digestion and exchange gases with the tissue and the surroundings.They travel freely through the mesenchyme and transport nutrients and gases from place to place.This page shows the interplay between the layers and amebocytes.

The Phylum Cnidaria includes such diverse forms as jellyfish, hydra, sea anemones, and corals.This wonderful web page from Animal Diversity Web provides a detailed look at the phylum and its organisms.Contains evolutionary content

Graphic shows the undischarged nematocyst of a hydra.

Graphic shows a discharged nematocyst of a hydra.

The annelids include earthworms, polychaete worms, and leeches. All members of the group are to some extent segmented, in other words, made up of segments that are formed by subdivisions that partially transect the body cavity.This wonderful web page from Animal Diversity Web provides a detailed look at the phylum and its organisms.Contains evolutionary content

In this earthworm dissection website, click on a the name of the structure to see a picture with that structure pointed out.

Images on this page are designed to help you review materials you studied in the laboratory. These images can be most useful to you if you try to identify labeled structures before clicking to obtain answers.

Summary page about flatworm metabolism and culture requirements.I use the page as a review tool in my classes.

Flatworms are unsegmented, bilaterally symmetrical worms that lack a coelom (acoelomate) but that do have three germ layers. Some forms are free living but many are parasitic.Great page for extended learning about this amazing phylum.Contains evolutionary content

Superior roundworm information page from a veterinary health web site.

Unlike many parasites that demonstrate a high degree of host specificity, Trichinella spiralis, the trichina worm, can be found in many species of carnivores and omnivores.Animals are infected with T. spiralis when they ingest infective larvae (juveniles) in raw or undercooked meat.To completely kill the trichina worm cysts in pork, the meat must be frozen at 5 oF for 21 days or -22 oF for 25 hours.Clearly, such processing was not available to the people of Old Testament times; thus, God decided to protect His people from trichinosis by simply forbidding them to eat pork.Contains evolutionary content

The mollusks are an interesting group.This fantastic web page from Animal Diversity Web provides eleven pages of pictures.Contains evolutionary content

Mollusca This page provides a great list of additional resources for this phylum.
Advanced topics related to Module #11


All animals are members of the Kingdom Animalia, also called Metazoa. This Kingdom does not contain the prokaryotes (Kingdom Monera, includes bacteria, blue-green algae) or the protists (Kingdom Protista, includes unicellular eukaryotic organisms). All members of the Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity.This site helps the student investigate the Kingdom.Great pictures and sound bites on this site.Contains evolutionary content

College-level discussion of the phylum.Has some great links to follow regarding the various organisms.

Earthworms have circular muscles which stretch their bodies.They also have longitudinal muscles which contract their bodies.Human muscle is one of the two excitable tissues of the body. Its major function is to provide movement of the body, and movement of structures within the body.In addition to these activities, muscle also serves some protective functions, particularly in the anterior abdominal wall.This web page helps the student view the structural similarity to earthworm and human muscle tissue.

This website contains a good discussion of planaria. Contains evolutionary content

Should your student want more lab work, here is a source from which you can order live hydra to grow and observe.

Should your student want more lab work, here is a source from which you can order live planaria.

A source for many different kinds of live organisms. Please note that they use the old name, Coelenterates, when refering to cnidarians.