1.) the Fate of the Blastopore Distinguishes Between Protostomes in Which It Becomes The______

Exam 2 Review
Supplemental Instruction
Iowa State University / Leader: / Matt
Course: / Biol 211 (1)
Instructor: / Biederman
Date: / 09/28/16

1.) The fate of the blastopore distinguishes between Protostomes in which it becomes the______, and Deuterostomes in which it becomes the______.

A) mouth, coelom

B) anus, mouth

C) coelom, archenteron

D) mouth, anus

E) none of the above

Follow up:

2.) Cephalization is most closely associated with which of the following?

A) a sessile existence

B) concentration of sensory structures at the anterior end

C) a vertebral column

D) a predatory lifestyle

E) a sedentary lifestyle

Follow up:

3.) Which cells in a sponge are primarily responsible for trapping food particles?

A) choanocytes

B) pore cells

C) spicules

D) amebocytes

E) epidermal cells

Follow up:

4.) Cnidarians are characterized by which of the following characters.

1. gatsrovascular cavity /incomplete digestive tract

2. cnidocytes

3. medusa stage

4. polyp stage

5. a pseudocoelom

A)1 & 4

B)2 & 4

C)1,2,3, & 4

D)1, 3, & 4

E)All five

Follow up:

5.) Molluscs, being the coolest group of all organisms, includes all of the following except

A) roundworms

B) clams

C) octopuses

D) snails

E) nautilus

Follow up:

6.) Which of the following are characteristics of arthropods?

1. protostome development

2. bilateral symmetry

3. a pseudocoelom

4. three embryonic germ layers

5. a closed circulatory system

A)1 & 2.

B)1, 2, & 4

C)2 & 3

D)2, 3, and 5

E)3, 4, & 5

7.) Nematodes can shed their exoskeleton. Therefore, they belong to the Ecdysozoa along with which other group?

A) Arthropoda

B) Oligochaeta

C) Dueterostomes

D) Chitons

Follow up:

8.) Which of the following descriptions is incorrect

A) Echinodermata – bilateral symmetry as larvae, coelom present

B) Nematoda – roundworms, pseudocoelomate

C) Cnidaria – radial symmetry, polyp and medusa body forms

D) Platyhelminthes – flatworms, gastrovascular cavity, acoelomate

E) Porifera– gastrovascular cavity, coelom present

Follow up:

9.) Which of the following is a shared characteristic of all chordates?

A) scales

B) jaws

C) vertebrae

D) dorsal hollow nerve cord

E) a four chambered heart

Follow up:

10.) Why is the amniotic egg considered such an important evolutionary breakthrough?

A) Without amniotic eggs there would be no Denny's

B) The shell allows reproduction and incubation of eggs in a terrestrial environment

C) It prolongs embryonic development

D) It permits internal fertilization to be replaced by external fertilization

Follow up:

Transition from Exam 1:

How do animals obtain food? How does this similar and different from fungi?

How do animals reproduce sexually?

Process
Result
Benefit

Classifying animals: What four characteristics do we classify first?

Body Cavity:

What is a coelom? Draw the three types below.

How many tissues are necessary to have any of these coelom types?

Draw the difference between a parasitic flatworm and a free living flatworm.

Parasite: / Free Living

Contrast Metamorphosis:

Explain each type
Benefits
Example Organism
Chordates
Echinoderms
Arthropods
Nematodes
Annelida
Mollusca
Platyhelminthes
Cnidaria
Porifera
Example Organism : / Symmetry / Tissue Layers (0,2, or 3?) / Body Cavity
(0, A, P, or C?) / Blastopore Fate (P or D?) / Digestive Tract (GC, Complete, Other?) / Classes / Special Things?