Brainscape's Knowledge GenomeTM

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


See full index

Marine Science > Unit 7 > Flashcards

Unit 7 Flashcards

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

What does Mollusca mean in English?

A

Soft

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

How many species of molluscs are there?

A

85,000

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

Do all molluscs have a radula?

A

No

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

What makes the shells of molluscs and what is the material of the shell made out of?

A

Made using the Mantle-Material is CaCO3

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

What are some common shared characteristics between molluscs?

A

Mantle-Mantle Cavity-Foot-Radula-Open Circulatory System MMFRO

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

Define Mantle

A

Muscular bag that surrounds the gills and most organs and is used to circulate water.

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

Define Mantle Cavity

A

The open internal space surrounded by the mantle (contains the guts).

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

Define Foot

A

Muscular structure used for movement.

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

Define Radula

A

Used to scrap up food, modified to bore holes in the shells, and form separate poison darts.

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

Define Open Circulatory System

A

Hemolymph (general body fluid that bathes organs) dumped on organs; cephlapods are the only molluscs that don’t have an open circulatory system.

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

What are the Molluscan Classes?

A

Polyplacophora-Gastropoda-Bivalvia-Cephalopoda PGBC

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

What are examples of Polyplacophora?

A

Chiton PC

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

What are examples of Gastropoda?

A

Snails-Nudibranchs G-SN

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

What are examples of Cephalopods?

A

Octopus-Squid C-OS

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

What are examples of Bivalves?

A

Clams-Mussels B-CM

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

Do Bivalves have a radula?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Define Shell

A

Valves

18
Q

Define Muscles

A

Two muscles close to the shell: the posterior and the anterior adductor; the muscles pull the shells together to defend themselves from predators.

19
Q

Define Circulation and Gas Exchange

A

Water comes in through the incurrent siphon, goes over gills, exits through the excurrent siphons; oxygen in the water goes to the clam and CO2 from the clam goes into the water.

20
Q

Define Reproduction

A

Marine mussels release sperm and egg in the water.

21
Q

Define Digestion

A

Most bivalves are suspension feeders, trapping fine mucus that coat the gills; they’re sessile and wait for food to come for them.

22
Q

Where do Bivalves live?

A

Rocky Intertidal Zones- Sandy/Muddy Beaches

23
Q

What eats bivalves?

A

Birds-Walrus-Sea Star-Sea Otter BWSS

24
Q

How do oysters make pearls?

A

Made from nacres, a chemical made in all bivalves; a pearl is the result of having something that irritates the insides of oysters.

25
Q

Define Shells of Gastropods

A

Spiral pattern-Made from CaCO3

26
Q

Define Nervous System and Senses of Gastropods

A

Complex nervous system that can detect light, chemicals in water (rhinophores)

27
Q

Define Defenses in Gastropods

A

Aposematic: most brightly colored to ward off predators; hard shell, toxins for killing prey, cerata in nudbranch have nematocysts.

28
Q

Define Digestive Systems in Gastropods

A

Complete Digestive system w/ mouth and anus and a radula.

29
Q

What habitats to Gastropods live in?

A

Tropical and Cold Waters- Sandy and Muddy Beaches

30
Q

What is the difference between arms and tentacles?

A

Arms have suction cups all over but tentacles only have suction cups on the end.

31
Q

How do Cephalopods move?

A

Jet Propulsion

32
Q

Define Jet Propulsion

A

Filling body cavities with water and forcefully squirting it out to propel forwards and backwards.

33
Q

List some characteristics of octopuses.

A

8 Arms

9 Brains

No Shell

34
Q

List some characteristics of Squid.

A

8 Arms

2 Longer Tentacles

Internal Shell

Include largest invertebrate

35
Q

List some characteristics of Cuttlefish

A

8 Arms

2 Tentacles

Internal Shell

36
Q

List some characteristics of Nautiluses

A

External Shell

Can have as many as 90 arms

No suckers or hooks, but can hold prey w/ sticky secretion.

37
Q

What are chromatophores?

A

Color changing cells.

38
Q

Define Ink

A

Ink is made of a chemical named melanin; octopus, squid, and cuttlefish release ink from their siphons.

39
Q

Define Benthic

A

Occurring on the bottom of a body of water.

40
Q

Define Pelagic

A

Inhabiting the upper layers of the water.

Marine Science (8 decks)

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