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Bio 102 > Phylum Mollusca > Flashcards

Phylum Mollusca Flashcards

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Biology 101 flashcards
1
Q

The word mollusc means?

A

Soft bodied

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2
Q

Name the body division of the mollusca

A

Head
Visceral mass
Muscular feet and mantle (shell)

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3
Q

The head of the mollusca comprise of what parts

A

Compound eye
Tentacles
Osphradia
Statocyst

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4
Q

The radula is used for what in phylum mollusca

A

Chewing

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5
Q

What is the mollusca’s mode of respiration

A

Body surface
Gills
Pulmonary sacs (aquatic)
Lungs (terrestrial)

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6
Q

Phylum mollusca excrete with the aid of what

A

Paired niphridia
Metaniphridia

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7
Q

What kind of blood circulation does the phylum mollusca possess

A

Open circulatory

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8
Q

Phylum mollusca are Oviparous or ovoviviparous?

A

Oviparous

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9
Q

Phylum mollusca are unsegmeted and laterally symmetrical true or false?

A

False.
They are unsegmeted and bilaterally symmetrical

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10
Q

Phylum mollusca possess an incomplete digestive system?

A

No
They possess a complete digestive system

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11
Q

Another name for flame cells

A

Protonihridia

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12
Q

Name the classes of Mollusca

A

1) APLACOPHORA(solanogaster) eg Neomenia and Chaetomoda
2) MONOPLACOPHORA eg Neophilina
3) POLYPLACOPHORA eg Chiton and Cryptochiton
4) GASTROPODA eg African Giant snail and Hailitus
5) PELECYCODA(Bi-valvia) ie “two shells” eg Oysters
6) SCAPHODA: Dentillum
7) CEPHALOPODA: Octopus and Nautilus

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13
Q

Class APLACOPHORA possess no shell, head, mantle, tentacles and muscular foot and their digestive “Ceca” is absent
True or false

A

True

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14
Q

MONOPLACOPHORA has no head, no tentacles but possess a feet. True or false?

A

True

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15
Q

POLYPLACOPHORA possess how many longitudinal shell?

A

Eight

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16
Q

GASTROPODA possess all the characteristics of a true snail?

A

Yes

17
Q

Which class of phylum mollusca’s shell is used for making jewelry

A

PELECYCODA

18
Q

Examples of PELECYCODA

A

Oyster
Clams
Mussel
Mytilus

19
Q

The only mollusc with a closed circulatory system is

A

Class CEPHALOPODA

20
Q

The only organism belonging to the class CEPHALOPODA is

A

Nautilus

21
Q

Phylum mollusca has a Blue or green colored blood due to the presence of a pigment called what

A

Haemocynaine

22
Q

The Mantle cavity of the phylum mollusca is made up of what

A

Hemocoeal

23
Q

The snails sensory organs are?

A

The compound eye
Osphradia
Statocyst

24
Q

The osphradia is used to sense what

A

Chemical of water

25
Q

What is the usefulness of the statocyst

A

To maintain chemical balance

26
Q

The largest Molluscs are

A

Class CEPHALOPODA eg sepia, cephalopoda and loligo

Bio 102 (10 decks)

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