Function of... (Echinoids) - Flashcards in A Level and IB Geology

Skip to content

Get Revising

Created by: Maria5
Created on: 23-05-17 16:54

1. What is the function of the water vascular system?

To release sperm and eggs into the water column
Allows the animals to extend its tube feet by forcing water into the controlled tissues
To allow fresh water to pass through the animals and dispose of dirty water

1 of 14

Other questions in this quiz

2. What is the function of the Labrum?

To direct waste particles to the sanitary tube
A 'lip' protruding over part of the mouth to prevent sediment moving into the mouth
For spine attachment, allowing them to dig burrows
To aid respiration and and maintaining the burrow and anal tube

3. What is the function of the petaloid ambulacra?

To create bilateral symmetry
To house pore pairs
To house tubercles
For aesthetic purposes to attract a mate

4. What is the function of the Fascioles?

They attach the spine to the boss
They have no real purpose
To direct water to the mouth and to direct waste away from the echinoid
They prevent sediment entering the test through small holes

5. What is the function of the plastron?

To respire by gas exchange
An area of attachment for small spines to dig burrows
For tube feet attachment for digging

View more questions

Comments

No comments have yet been made

Similar Geology resources:

Echinoid revision test

Echinoid Morphology

Echinoids (Regular vs Irregular)

Echinoids (Regular vs Irregular)

Differences between regular and irregular echinoids

See all Geology resources »See all F795 resources »