Lecture 5

Question 1

Classification of Organisms

Answer 1

Domain-Archaea, Bacteria, Eukaryota
Kingdom- 6 kingdoms(4 in eukary.)
Phylum(Subphylum)
Class(Subclass) (Superorder)
Order
Family
Genus
Species

Question 2

How many phyla in the animal kingdom?

Answer 2

31

Plantae only has 14 and Fungi only has 8

Question 3

Phylum: Ennelida (ringed); Earthworms, leeches, poltchaetes

Answer 3

They have:
Bilateral Symmetry
Segmented bodies
No appendages
No eyes
Cutaneous respiration
Closed circulation system

Question 4

Phylum: Tardigrada (water bears)

Answer 4

They have:
Bilateral symmetry
Segmented bodies
4 pairs of unsegmented legs
No eyes/antennae
Cutaneous respiration
Open circulation system

Question 5

Phylum: Onychophora: Velvet worms

Answer 5

They have:
Bilateral Symmetry
Segmented body
Lobe like legs
small pair of eyes
Segmented antennae
tracheal respiratory system
Open circulation system
Exoskeleton

Question 6

Phylum: Anthropoda

Answer 6

-Etymology is the study of word
-Anthro= jointed; poda= legs
Has many SUBPHYLUMS

Question 7

Subphylums of Anthropoda

Answer 7

• Crustacea
• Chelicerata
• Myriapoda
• Hexapoda

Question 8

Subphyum: Crustacea (crayfish, crabs, lobsters, shrimp, pill bugs)

Answer 8

a) bilateral symmetry
b) segmented body (2 parts, abdomen and cephalothorax)
c) segmented legs (5-6 pairs or can be biramous)
d) small pair of eyes
e) 2 pair of segmented anntenae
f) gills (rare with trachea)
g) open circulation system
h) exoskeleton
i) Marine, Aquatic, Terrestrial

Question 9

Subphylum: Chelicerata (horseshoe crabs, spiders, scorpions, mites, ticks)

Answer 9

a) Bilateral Symmetry
b) segmented body (2 parts, abdomen and cephalothorax)
c) Segmented pair of legs (4 pairs)
d) simples eyes (most with 8)
e) no antennae
f) book lungs for respiration
g) open circulation system
h) exoskeleton

Question 10

Subphylum: Myriapoda

Answer 10

4 classes:
Pauropoda
Symphyla
Diplopoda
Chilopoda

Question 11

Subphylum: Hexapoda

Answer 11

4 orders/class in this subphylum:
Protura
Diplura
Collembola
* These are all Entognathus (internal/enclosed mouthparts)
Class: Insecta
* This one in Ectognathus (external mouthparts)

Question 12

Entognaths and Ectognaths

Answer 12

Ento=inside—>Hexapods: Protura, collembola, Duplura
Ecto outiside—> Hexapods: Insecta
gnatha=jaw

Question 13

Insect Relatives

Answer 13

Question 14

Articulata hypothesis

Answer 14

Means that they are related because of segmentation. Not widely accepted.

Question 15

Ecdysozoa hypothesis

Answer 15

Insects are more closely related to other animals that molt.

Question 16

1. Class Pauropoda

Answer 16

a. bilateral symmetry
b. Head and many segmented body
c. Many legs, usually one pair on most body segments
a. Bilateral symmetry
d. No eyes
e. 1 pair of biramous antennae
f. Tracheal respiration system
g. Open circulatory system

Question 17

2. Class Symphyla (garden centipedes)

Answer 17

a. Bilateral symmetry
b. Head and many segmented body
c. Many legs, usually one pair on most body segments
d. No eyes
e. 1 pair of antennae
f. Tracheal respiration system
g. Open circulatory system

Question 18

3. Class Diplopoda (millipedes)

Answer 18

a. Bilateral symmetry
b. Head and many segmented body
c. Many legs, with 2- pair per body segment
d. Groups of simple eyes
e. 1 pair of antennae
f. Tracheal respiration system
g. Open circulatory system

Question 19

4. Class Chilopoda (centipede)

Answer 19

a. Bilateral symmetry
b. Head and many segmented body
c. Many legs, with 1 - pair per body segment
d. None to a few simple eyes
e. 1 pair of antennae
f. 1st pair legs jaw-like poisonous claw
g. Tracheal respiration system
h. Open circulatory system

Question 20

Comparison of Phylum Annelida, Tardigrada, Onychophora

and Arthropoda

Answer 20

Question 21

Subphylum Comparison

Answer 21

Question 22

Order and Class Comparison

Answer 22