Bauplane Body Types

Question 1

What is the Bauplane concept?

Answer 1

A basic pattern of organization in an animal that is related to a particular complexity of arrangement/life history.

Question 2

Which body type lacks true tissues?

Answer 2

Ablastic

Question 3

What phyla is Ablastic in nature?

Answer 3

“Porifera” (e.g. Sponges)

Question 4

Cnidaria has what tissue construction?

Answer 4

Diploblastic

Question 5

Which layers of tissue are in diploblastic?

Answer 5

ectoderm and endoderm

Question 6

What is the most complex tissue construction?

Answer 6

Triploblastic

Question 7

List the coelom constructions

Answer 7

Acoelomate, Pseudocoelomate, and (Eu)coeloomate

Question 8

Describe Acoelomate, list example of phyla with it

Answer 8

No cavity is present, Platyhelminthes (flatworms)

Question 9

Which coelom construction has a space between mesoderm and endoderm?

Answer 9

Pseudocoelomate.

Question 10

Give an example of a phyla with pseudocoelomate

Answer 10

Nematoda, i.e roundworms

Question 11

Which coelom construction has a space between the mesoderm?

Answer 11

(Eu)coelomate

Question 12

Annelida (i.e. earthworm) has what type of coelom construction?

Answer 12

(Eu)coelomate

Question 13

Why develop a coelom?

Answer 13

The coelom separates functions between the locomotive section and the digestion section.

Question 14

What is the classical progression of the coelom construction from simple to complex?

Answer 14

Acoelomate —-> Pseudocoelomate —-> (Eu)coeloomate

Question 15

In the (Eu)coelomate, which layer of mesoderm is the locomotor muscles? The digestive muscles?

Answer 15

the outer mesoderm layer is the locomotor muscle and inner layer towards the endoderm is the digestive muscle.

Question 16

Progression of the coelom is _______?

Answer 16

Functional, not linear

Question 17

Why did the acoelomate condition evolve?

Answer 17

It is needed for locomotion

Question 18

why did the pseudocoelomate condition evolve?

Answer 18

The pseudocoelom was evolved because it is typically present in parasites. They use the host for the digestive gut movement process and thus don’t one

Question 19

Where would you find the pseudocoelomate?

Answer 19

Between the mesoderm and endoderm.

Question 20

List the types of symmetry associated with body types

Answer 20

Asymmetry, Radial Symmetry, and Bilateral symmetry

Question 21

What type of symmetry has no true axes? How do you describe this symmetry?

Answer 21

Asymmetry, deep and superficial

Question 22

What phyla has no true axes?

Answer 22

“Porifera” (e.g. sponges)

Question 23

How many axes does Radial symmetry have?

Answer 23

One plus amounts of axes

Question 24

Phylum Cnidaria (e.g. jellyfish) have what type of symmetry? How is that described?

Answer 24

radial symmetry, umbrellar (aboral) and subumbrellar (oral)

Question 25

Head leads the way (cephalization) in what type of symmetry?

Answer 25

Bilateral symmetry

Question 26

Describe bilateral symmetry

Answer 26

1 axis only, Head leads the way, motile creatures

Question 27

Give an example of a bilateral symmetric species?

Answer 27

Flatworms (e.g. phylum platyhelminthes)

Question 28

Planes of bilateral symmetry

Answer 28

Transverse plane, sagittal plane, midsagittal plane, frontal plane, and oblique plane (not orthogonal to the body)

Question 29

Midsagittal plane cuts from ____ to ____, usually _____ of a body.

Answer 29

dorsal to ventral, down the middle

Question 30

Nostrils are _____ to the eyes. Eyes are ______ to the nostrils.

Answer 30

medial, lateral

Question 31

Eyes are _____ to the mouth. The mouth is _____ to the eyes.

Answer 31

dorsal, ventral

Question 32

Fingers are ______ to the elbow. Elbows are _____ to the fingers.

Answer 32

distal, proximal

Question 33

Starfish directional terminology is….?

Answer 33

Aboral and oral

Question 34

Animals with no appendages but radial symmetry are directionally termed?

Answer 34

deep and superficial