Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BIO 2135, Animal Form and Function > Mollusca > Flashcards

Mollusca Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the role of the apical tuft?

A

Used to keep the trochophore larva upright

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the two apomorphies of the mollusca?

A

Schizoceol, and metanephridia filtering coelomic fluid

2. dorsal heart and pericardial cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the role of ceolomic fluid?

A

transport fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the metanephridia?

A

An excretory gland used for the mollusca

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Describe how the metanephridia works?

A

Fluid is pulled in through the nephrostome, nutrients were pulled out the top, the nitro waste is filtered in the bottom, and excreted through the nephridiopore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define adaptive radiation

A

Taxa of animals that are all related, but vastly different body plans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is a radula?

A

a chitinous band of small teeth used to break up food for consumption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the radula located on?

A

on top of the odontophore (tongue)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define tetraneural nervous system

A

Has four nerve cords

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the ctenidium

A

Molusc version of the lung/gill

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the pericardial cavity?

A

Area and layer surrounding the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is another role of the metanephridia

A

Passing sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the hemocoel?

A

Open part of the circulatory system, where the organs are located. Bathes organs in blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where does the veliger get its name from?

A

Velum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What group of mollusca have 8 chitin shells?

A

Polycophora

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Define periostracum

A

Outer layer, doesnt dissolve in acid

17
Q

Define Prismatic layer

A

Makes up bulk of shell, made of calcium,

18
Q

Define Nacreous layer

A

Made of mother of pearl, very smooth

19
Q

Mollusc clam edge…

A

Trilobe

20
Q

Role of crystaline style

A

attached to particulate mucous, spins to bring the mucous down to grind against the gastric shield

21
Q

What is the role of gastric shield?

A

crystaline style rubs against it, causing the mucous be ground down, nutrients extracted to ciliated storage area

22
Q

Digestive glands?

A

They sort only certain food particles to move on and get absorbed

23
Q

What is the result of torsion in snails?

A

They shift mantel cavity to the front, and the anus is now above their head

24
Q

What are two advantages of torsion?

A
  1. Crossed retractor muscles now pull head and posterior into shell quickly
  2. By placing mantle cavity and water sensing organs at the front fo the animal, we are able to test the water in front of you
25
Q

What is the impact of taking the dart

A

You become more female in order to take sperm

26
Q

The snails are squished for room. Some organs combine, such as…

A

sperm duct and oviduct are the same.

Ovaries and testes are the same gland, called ovotestis

BIO 2135, Animal Form and Function (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions