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Flashcards in Unit 3 Deck (55)
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1

Compare/Contrast the cleavage pattern of a protostome and a deuterostome

Protostome: Spiral Cleavage

Deuterostome: Radial Cleavage

2

Compare/Contrast the cell fate of a protostome and a deuterostome

Protostome: Determinate developement  (cell fate set very early on)

 

Deuterostome: Inderterminate developement (cell fate is not set until later on)

3

Compare/Contrast blastopores for protostomes and deuterostomes

Protostome: The blastopore (depression) becomes the mouth, forming mouth to anus

Deuterostome: The blastopore (depression) becomes the anus, forming anus to mouth

4

Compare/Contrast the coelom formation in protostomes and deuterostomes

Protostome: Schizocoelous- Body cavity is formed when a tissue splits open and a new space is created

Deuterostomes: Enterocoelous; Body cavity is a pocket (bubble) that develops from a digestive tract.

5

Label this Scyphozoan medusa

6

Fill in the blanks

7

Lophotrocozoa are a clade that makes up which Phyla

Phylum Mollusca

Phylum Annelida

Phylum Platyhelminthes

8

Ecdysozoa is a clade that make up which Phyla

Phylum Arthropoda

Phylum Nematoda

9

Define and differentiate the terms acoelomate, psuedocoelomate and eucoelomate

All three are triploblastic with ectoderm,mesoderm and endoderm but they body cavities are different

 

Acoelomate - Organism has no true body cavity

Psuedocoelomate - Organism has false body cavity; body cavity is present but it doesnt arise from the mesoderm

Eucoelomate - Organism has true body cavitie that arrises from the mesoderm

 

 

10

Describe the difference between a complete digestive system and an incomplete one

In an incomplete digestive system there is only one opening that leads to a GVC. The organism can ingestive food but has to digest and expell the waste before it can take in another meal.

In a complete digestive system there are two openings that form a mouth--->anus digestive tract and the organism can continuously feed

11

An organism that possess both male and female reproductive organs

Monoecious

12

Organisms that only possess either male or female reproductive organs; two different body forms for male and female

Dioecious

13

Are organisms from Class Turbellaria free-living or parasitic

Free-living

14

Are organisms from Class Trematoda free-living or parasitic

parasitic

15

Are organisms from Class Monogenea free-living or parasitic

parasitic

16

Are organisms from Class Cestoda free-living or parasitic

parasitic

17

Platyhelminthes that possess a GVC (blind gut) belongs to what Class

Turbellaria

18

Identify this orgnaism and the Phylum and Class it belongs to

Label the parts

Phylum Platyhelminthes

Class Turbellaria

Dugesia

19

Label the parts of this typical flatworm

20

Identify this organism in cross section and label the parts

Dugesia

21

Describe the life cycle of the Clonorchis (liver fluke)

22

Identify this organism and the Phylum and Class it belongs to

Label the parts

Phylum Platyhelminthes

Class Trematoda

Clonorchis

23

Label this proglottid and identify what organism this structure comes from

Taenia

Class Cestoda

24

Distinguish between these different structures on a Taenia

25

Define eutely

It means that every organism possess the same number of cells

26

Some Gastropods exhibit a rotation of their organs 90 and 180 degrees giving them an asymmetrical body. This is known as ____________

Torsion

27

A molluscan that has one shell

univalve

28

A molluscan that has two shells

Bivalve

29

When a molluscan shell spiral is on one plane

planospiral

30

When a molluscan shell spirals into a cone shape

Conispiral