Brainscape's Knowledge GenomeTM

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


See full index

Biology 11 > Mollusks/Annelids > Flashcards

Mollusks/Annelids Flashcards

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

Symmetry Type of Mollusks

A

Bilateral Symmetry

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

Visceral Mass

A

Contains the internal organs

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

Mantle

A

Delicate tissue that produces shell. Thin layer of tissue that covers the entire body.

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

Foot

A

Usually contains the mouth and used for locomotion and food capture. Different forms for different animals

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

Shell

A

Used for protection, but not all mollusks still retain it (eg. octopi)

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

Diet (Mollusks)

A

Can be herbivores, carnivores, filter feeders, scavengers, or parisites.

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

Radula

A

Tongue shaped structure with teeth all over. used to drill through animal shells or scrape algae off rocks.

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

Gills in Clam and Oysters

A

Filter Food.

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

Method of Respiration (Mollusks)

A

Usually gills

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

Mantle Cavity

A

In snails and slugs. Lined with blood vessels as they have no gills.

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

Type of Circulatory System (Mollusks)

A

Open Circulatory System.

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

Sinuses

A

Blood goes through sinuses which lead to blood vessels

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

Respiration Process & Where it is Located (Mollusks)

A

Oxygen and CO2 exchange in gills

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

Nephridia

A

Tube shaped, ammonia leaves through here. Solid waste leaves through anus

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

Simple Nervous System (Mollusks)

A

Ganglia near mouth, few nerve cords, simple sense organs. Eg. Clams

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

Complex Nervous System (Mollusks)

A

Octopi. Very intelligent with well developed brains, can remember for long time.

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

Reproduction (Mollusks)

A

Most have separate sexes and have external fertilization (eggs and sperm released into water), which develop into larvae. Some are hermaphrodites.

17
Q

Class Division Basis (Mollusks)

A

Divided based according to foot and shell

18
Q

Class Bivalvia

A

Two large shells, filter feeders, grows up to 2m diamater. Eg. Clams, oysters, mussels, scallops.

19
Q

Class Gastropoda

A

Translates to “stomach” “foot”. All have radula and are snails, and are shell-less or single shelled that move using muscular food located on ventral side. Eg. Slugs, ground snails

20
Q

Class Cephalopoda

A

Translates to “head” “foot”. Internal shell or no shell in return for speed, making them good hunters. Head attached to single foot which is divided into arms or tentacles. Eg. Octopi and squid.

21
Q

Septum

A

Internal walls that separate the segments of an annelid

22
Q

Habitat (Annelids)

A

Mostly in mud or oceans

23
Q

Nervous System (Annelids)

A

Most have brain and several nerve cords

24
Q

Pharynx

A

Catches prey and pumps food/soil into esophagus

25
Q

Esophagus

A

Tube where food/soil is pumped through

26
Q

Crop

A

Location where food is first stored

27
Q

Gizzard

A

Food is ground into smaller pieces

28
Q

Intestine

A

Digests food

29
Q

Nephridia

A

Filters fluid

30
Q

Type of Circulatory System (Annelids)

A

Closed Circulatory System

31
Q

Two Types of Blood Vessels (Annelids)

A

Dorsal - top, moves blood toward head of worm
Ventral - bottom, moves blood toward end of worm

32
Q

Aortic Arches

A

5 hearts of the Annelid

33
Q

Two Groups of Muscles (Annelids)

A

Longitudinal - front to rear, contract to make worm shorter/fatter
Circular - wrap around each body segment and contract to make the worm longer and thinner

34
Q

Reproduction (Annelids)

A

Most sexual, some hermaphrodites, some budding.

35
Q

Clitellum

A

When eggs are ready for fertilization, clitellum excretes a mucus ring in which sperm and eggs are released. Fertilization takes place inside ring, which slips off and forms a cocoon before hatching a few weeks later.

36
Q

Polychaetes

A

Many bristles. Eg. Marine bristle worm, bloodworm, sandworm

37
Q

Hirudinae

A

Parasite that sucks blood and bodily fluids of host. Used to reduce swelling after surgery and secretes a fluid that stops blood from clotting. Ex. Leech

38
Q

Oligochaetes

A

Few Bristles. Sold in pet stores as food. Eg. Earthworm, tubiflex worm

39
Q

Ecological Significance of Annelids

A

Enriches soil, slows down erosion, aerates soil, helps decompose plant matter, makes passageways for plant roots and water, increases nitrogen fixation.

Biology 11 (4 decks)

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