Lab 8 Flashcards
Briefly describe the Myriapoda of phylum Arthropoda
Includes centipedes and millipedes. Centipedes are carnivorous whereas millipedes are typically scavengers. Both are found primarily in tropical regions. They are divided into head and trunk, with the head bearing a single pair of antennae and some mandibles. The trunk is elongated into many leg-bearing segments
List the phylum, class, and genus of this organism. What is the common name of this type of organism? What portion of the body is referred to as the trunk? How many legs come off of each trunk segment?
Phylum - Arthropoda
Class - Myriapoda
Genus - Scolopendra
Common name is centipede. All body sections but the head are collectively referred to as the “trunk”.
1 pair of legs off of each trunk segment
List the phylum, class, and genus of this organism. What is the structure indicated in the photo? What are the feeding habits of this organism?
Phylum - Arthropoda
Class - Myriapoda
Genus - Scolopendra
A is the poison claws, which are modified maxillipeds.
They are predaceous carnivores
Name the phylum, class, and genus of this organism. What is its common name?
Phylum - Arthropoda
Class - Myriapoda
Genus - Spirobolus
Common name is millipede
Examine these two specimens (Scolopendra and Spirobolus) for the following traits:
- Thickness of exoskeleton
- Shape of head/trunk
- Length of antennae
- Number of legs on each trunk segment
- Presence of poison claws
- Uniramous/biramous appendages
- Centipede looks thicker
- Millipede has round head. Centipede has scary head
- Millipede has no visible antennae. Centipede has some
- Millipede has 2 pairs per segment, centipede has 1.
- Millipede has no poison claws
- Both uniramous I think
Briefly describe the traits shared by class insecta.
Largest group of animals on earth. Divided into head, thorax, abdomen. Head has pair of antennae, compound eyes, feeding appendages and mouthparts. Thorax is comprised of threesegments, eachwith a pair of legs. May also have wings.
Name the phylum, class, genus, and species of this organism. What is it’s common name? How do the two pairs of wings differ in structure/function?
Does the abdomen carry appendages?
Phylum - Arthropoda
Class - Insecta
Genus - Romalea
Species - microptera
Grasshopper.
Hind wings are long and used for flight, forewings are short and used for balance during flight.
No, abdomen does not. Legs are solely on thorax.
Name the phylum, class, genus, and species of this organism. Discuss the shape and structure of it’s wings.
Phylum - Arthropoda
Class -Insecta
Genus- Apis
Species - mellifera
Four membranous wings, hind wings much smaller than forewings. Attached to front wings.
Name the phylum, class, genus, and species of this organism. Discuss the shape and structure of it’s wings.
Phylum - Arthropoda
Class- Insecta
Genus - Sympetrum
Species - internum
Four wings, hind wings are broad at base and heavuly veined.
Name the phylum, class and genus of this organism. Describe the structural traits of it’s legs. How could these affect it’s lifestyle?
Phylum - Arthropoda
Class - Insecta
Genus - Blaberus
Legs are under the body and hugged close. Good for scurrying on the ground.
Name the phylum, class, genus, and species of this organism. Describe the structural traits of it’s legs. How could these affect it’s lifestyle?
Phylum - Arthropoda
Class - Insecta
Genus - Dytiscus
Species - marginalis
End of leg forms a paddle for swimming, forelegs reduced.
Describe the difference between hemimetabolous development and holometabolous development
Hemimetabolous - incomplete metamorphosis
Holometabolous - complete metamorphosis
What type of metamorphosis (complete or incomplete) do *Apis mellifera *and *Romalea microptera *have?
Honeybee - Incomplete
Grasshopper - Complete
What are the feeding habits of this organism?
Piercing/sucking
What are the feeding habits of this organism?
Siphoning? Sticks tongue in flowers maybe
What are the feeding habits of this organism?
Lapping up nectar
What are the feeding habits of this organism?
Uses tongue-like structure to stick food to it
What are the feeding habits of this organism?
Chewing/biting
Briefly describe phylum nematoda
Most extensive group in the Aschelminths. Have parasitic and free living species in many enviroments. Have cylindrical worm like bodies with tubular digestive system.
Name the phylum, genus and species of this organism. Which one is male? Where does this organism live?
Phylum - Nematoda
Genus - Ascaris
Species - Lumbricoides
Male is on the left, smaller with a hooked tail.
Lives in humans as a parasite
Name the phylum, and species of this organism. How does it resemble Ascaris?
Phylum - nematomorpha
Genus - Gordius
Long and skinny like Ascaris.
How can one differentiate adult nematodes from nematomorphs?
They are very alike in habitat and lifestyle, but Nematomorpha have a non-functioning gut, and do not have an excretory or circulatory system
Name the phylum of this organism. Briefly describe the phylum.
Phylum rotifera. Microscopic animals with a spherical or cylindrical body capped by a corona of cilia. The bottom of the body bears a “foot”
Name and describe the structures indicated
A - Corona of cilia for feeding, draws food into pharynx
B - Mastax - Area of pharyx that contains sharp chopping parts
C - Foot(has toes)
To what phylum does this organism belong? What is the common name for this phylum? Briefly describe this phylum
Phylum - Acanthocephala
Hook worms
Parasitic. Have long cylindrical bodies with a retractile proboscis covered in hooks. Do not have a digestive tract and must absorb nutrients from host
Compare the guts of adult Acanthocephalans, Nematodes, and Nematomorphans
Acanthocephalins - No gut, absorb nutrients from host
Nematomorphans - reduced, non-functional gut. No mouth or anus.
Nematodes - Tubular gut with mouth and anus
