Echinoid revision test

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  • Created by: naomi
  • Created on: 05-01-14 15:21
How many lines of symmetry are on a regular echinoid?
5
1 of 25
What is the function of the spines?
Protection
2 of 25
Where is the plastron on an irregular echinoid?
posterior interambulacra, bottom centre
3 of 25
Where to the tube feet extend through the test?
pore pairs in the ambulacral plates
4 of 25
What are the functions of the tube feet?
Movement, respiration, sucking
5 of 25
Name the mode of life of an irregular echinoid
Infaunal
6 of 25
Name the mode of life of a regular echinoid
Epifaunal
7 of 25
Which is bigger, the ambulacral plate or the interambulacral plate?
Interambulacral
8 of 25
Name the type of symmetry for a regular echinoid?
5 fold symmetry
9 of 25
Where are the spines attached?
to the interambulacral plates and tubercles
10 of 25
Where is the **** on an irregular echinoid?
on the bottom, outside of the apical system
11 of 25
What is the anterior groove?
groove on top of irregular echinoid - leads food to the mouth
12 of 25
How to regular echinoids move?
spines attached to interambs plates at spine boss by muscles - any direction
13 of 25
How do irregular echinoids move?
rowing action of the flattened spines of the plastron
14 of 25
What sape is the test on an irregular echinoid?
heart shaped, flat
15 of 25
Name the type of symmetry for an irregular echinoid
bilateral symmetry
16 of 25
How do irregular echinoids feed?
filter feeding
17 of 25
Where is the mouth on an irregular echinoid?
bottom of the echinoid in the centre
18 of 25
Where is the peristome?
around the mouth
19 of 25
What are tubercles?
where free moving spines are attached
20 of 25
How many ambulacra are there on a regular echinoid?
5
21 of 25
When did echinoids become extinct?
they didn't!
22 of 25
Where is the apical system?
around the periproct on the top
23 of 25
What is a labrum used for?
helps direct food to the mouth
24 of 25
Are echinoids invertebrates or vertebrates?
Invertebrates
25 of 25

Other cards in this set

Card 2

Front

What is the function of the spines?

Back

Protection

Card 3

Front

Where is the plastron on an irregular echinoid?

Back

Preview of the front of card 3

Card 4

Front

Where to the tube feet extend through the test?

Back

Preview of the front of card 4

Card 5

Front

What are the functions of the tube feet?

Back

Preview of the front of card 5
View more cards

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