Echinodermata Lab Questions Flashcards
1
Q
Deuterostome
A
Anus forms before the mouth
2
Q
Dermal endoskeleton
A
3
Q
Ampulla
A
Each tube foot has a small bulb called an ampulla. The ampulla squeezes water into the tube foot to stretch it out, with a one way valve keeping it from returning to the radial canals until the ampulla relaxes
4
Q
Skin gills
A
5
Q
Water vascular system
A
6
Q
Medreporite plate
A
7
Q
Repiration
A
Simple gills and tube feet
8
Q
Excretion
A
No organ, simple diffusion from tube feet
9
Q
Reproduction
A
Sexual (most common) and asexual (budding, not common)
10
Q
Movement
A
Slowly along the floor using tube feet
11
Q
feeding
A
Filter feeders
12
Q
Tissues?
A
Yes
13
Q
Organs?
A
yes
14
Q
Organ systems?
A
yes
15
Q
Germ layers?
A
Triploblastic, 3
16
Q
Symmetry?
A
Larval stage is bilateral, then adult becomes radial
17
Q
Cephalization?
A
No
18
Q
Body cavity?
A
coelomates
