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Zoology Lecture Unit 2 > Phylum Annelida > Flashcards

Phylum Annelida Flashcards

1
Q

Phylum Annelida common name

A

Segmented worms, earthworms

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2
Q

Phylum Annelida

Feeding mechanisms

A

Deposit feeder
suspension feeder
fluid feeders

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3
Q

What is deposit feeding

A

eat dirt, sand, mud

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4
Q

Phylum Annelida

How do they breathe?

A

Cutaneous respiration

Diffuse gas through moist skin

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5
Q

Phylum Annelida

Protonephridium characteristics

A 
Diffusion
Closed
Flagellum
Energy saving
Water using
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6
Q

Phylum Annelida

Metanephridium characteristics

A 
Open
Active transport
Cilliated
Energy using
Water saving
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7
Q

Phylum Annelida

Water pressure inside coelom to keep body shape

A

Hydrostatic skeleton

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8
Q

Phylum Annelida

Body level of organization

A

Organ system

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9
Q

Phylum Annelida

Digestive tract

A

Complete digestive system

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10
Q

Phylum Annelida

Type of symmetry

A

Bilateral

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11
Q

Phylum Annelida

Only phylum so far with a Ganglia + ___

A

Ventral nerve cord

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12
Q

Phylum Annelida

What is metamerism?

A

Serial repetition of body parts

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13
Q

Phylum Annelida

What are the advantages of a metameric body?

A

Injury is often less fatal
Compartmentalization allows for more precise body control
Allows for evolutionary tinkering

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14
Q

Phylum Annelida

What is tagmatization?

A

Specialization of repeated parts

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15
Q

Phylum Annelida

Synapomorphy with exception

A

Setae

lost in leeches

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16
Q

Phylum Annelida

What species lost setae?

A

Leeches

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17
Q

Phylum Annelida

Proposed super phylum

A

Lophotrochozoa

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18
Q

Class Errantia

“Err-“ meaning

A

Wandering

19
Q

Class Errantia

Synapomorphy

A

Parapodia

20
Q

Class Errantia

Locomotion

A

Alternate contraction of L and R longitudinal muscles using parapodia to grip the environment

21
Q

Class Errantia

Prostomium

A

“nose area”

2-4 Pairs of eyes

22
Q

Class Errantia

Eye types

A

Photoreceptors: Light/dark only

Lens, cornea, retina - Hunt by sight

23
Q

Class Errantia

Peristomium

A

1st true segment

Sensory tentacles - Hunting

24
Q

Class Errantia

Cuticle purpose

A

Non-living layer

Protects against drying out

25
Q

Class Errantia

Statocysts purpose? Why?

A

Sensitive to gravity, forces, and water currents

Because they swim

26
Q

“Pro-“ Meaning

A

Before

27
Q

“-Stomium” meaning

A

Mouth

28
Q

“Peri-“ meaning

A

Around

29
Q

Class Sedentaria

Kind of synapomorphy

A

Greatly reduced setae

4 per segment max

30
Q

Class Sedentaria, Order Clitellata

Clitellum purpose?

A

Secretes coccoon for larvae

Protects from predators and drying out

31
Q

Order Clitellata, Family Lumbricidae common name

A

Earthworms

32
Q

Order Clitellata, Family Lumbricidae

Locomotion

A

Alternate circular and longitudinal muscles using setae to grip the environment

33
Q

Order Clitellata, Family Lumbricidae

Digestive tract path

A

mouth -> pharynx -> esophagus -> crop -> gizzard -> intestine -> anus

34
Q

Order Clitellata, Family Lumbricidae

The crop is ___

A

Glandular

35
Q

Order Clitellata, Family Lumbricidae

The gizzard is responsible for ___

A

Grinding

36
Q

Order Clitellata, Family Lumbricidae

Where is the typhlosole

A

Inside the intestine

37
Q

Order Clitellata, Family Lumbricidae

Where is the purpose of the typhlosole

A

increase surface area

38
Q

Order Clitellata, Family Lumbricidae

Reproductive anatomy

A

Monoecious

39
Q

Order Clitellata, Family Lumbricidae

Mating style and hatch time?

A

Bidirectional sperm exchange

1-2 weeks to hatch

40
Q

Order Clitellata, Family Hirudinidae

“Hirudino” meaning

A

Leech

41
Q

Order Clitellata, Family Hirudinidae

Characteristics

A

Anterior and posterior suckers

42
Q

Order Clitellata, Family Hirudinidae

Locomotion

A

Alternating of circular and longitudinal muscles and using anterior and posterior suckers to grip the environment

43
Q

Order Clitellata, Family Hirudinidae

Feeding behaviors

A

Fluid feeders and sometimes predators for small prey

Zoology Lecture Unit 2 (12 decks)

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