Annelida

Question 1

the two clades in Annelida

Answer 1

1. Errantia
2. Sedentaria

Question 2

Annelida means

Answer 2

little rings

Question 3

describe the body of annelida

Answer 3

segmented worms

Question 4

where do Annelia live

Answer 4

marine
aquatic
terrestrial

Question 5

least to most inclusive

Answer 5

Phylum Annelida: Lophotrochozoan: Bilaterian: Eumetazoan: Metazoan

Question 6

traits of Annelida

Answer 6

1. ALL have segmented bodies
2. complete gut with mouth and anus
3. sophisticated nervous, circulatory, reproductive and excretory systems

Question 7

describe the development of Annelida (4)

Answer 7

1. bilaterian (bilateral symmetry)
2. triploblastic
3. coelomates
4. Protostome

Question 8

sexual reproduction in annelids can be via

Answer 8

hermaphroditism OR dioecy

Question 9

clade Errantia are ______ (mobile or sessile)

Answer 9

mobile

Question 10

clade Errantia habitat

Answer 10

marine

Question 11

what is one trait that many species in clade Errantia share

Answer 11

pair of paddle-like or ridge-like structures called parapodia

Question 12

what do each parapodium have in clade Errantia

Answer 12

numerous chaetae bristles made from chitin

Question 13

are parapodia unique ONLY to clade Errantia

Answer 13

NO

Question 14

function of parapodia

Answer 14

1. locomotion
2. respiration
3. predator behavior

Question 15

do clade Errantia have well-developed jaws

Answer 15

YES

Question 16

do clade Errantia show cephalization

Answer 16

YES

Question 17

example of a species in clade Errantia

Answer 17

polychaete

Question 18

least to most inclusive

Answer 18

Polychaete: clade Errantia: phylum Annelida: Lophotrochozoan: Bilateria: Eumedazoa: Medazoan

Question 19

Clade Sedentarians are ______(mobile/sessile)

Answer 19

TEND to be less mobile

Question 20

Clade Sedentarians habitats

Answer 20

1. some burrow into the substrate
2. some live in protective tubes

Question 21

what do tube-dwelling Sedentarians have

Answer 21

elaborate gills or tentacles used for filter feeding

Question 22

what sepcies are included in Clade Sedentarians

Answer 22

1. tubeworms
2. leeches
3. earthworms

Question 23

least to most inclusive

Answer 23

Christmas Tree Worm: Clade Sedentarians: Annelida: Lophotrochozoan: Bilaterian: Eumetazoan: Metazoan

Question 24

Clade Sedentarians habitats

Answer 24

1. marine
2. terrestrial
3. aquatic
4. ice

Question 25

earthworm movement VS Nematode movement

Answer 25

earthworms have BOTH longitudinal and circular muscles while Nematodes have ONLY longitudinal

Question 26

earthworm circulatory system

Answer 26

closed

Question 27

do earthworms have a brain

Answer 27

NO- they aren't predators so they don't need a prominent mass of sensory organs

Question 28

how many chaetae per segment in earthworms

Answer 28

8

Question 29

what structure is associated with excretion in earthworms

Answer 29

Metanephridium

Question 30

Metanephridium function

Answer 30

1. removes fluid waste through pores 2. solid waste it removed by the anus

Question 31

what does the coelom act as in earthworms

Answer 31

a hydrostatic skeleton

Question 32

what do chaetae provide in earthworms

Answer 32

traction

Question 33

how do earthworms gain their nutrients

Answer 33

eat through soil, extracting nutrients as the soil moves through their alimentary canal

Question 34

reproduction in earthworms

Answer 34

they are hermaphrodites BUT cross-fertilize (swap sperm)

Question 35

can earthworms reproduce asexually

Answer 35

some can by fragmentation

Question 36

leeches belong to

Answer 36

Clade Sedentarians

Question 37

leech habitats

Answer 37

1. most are freshwater 2. some are marine or terrestrial

Question 38

most leeches are

Answer 38

parasitic

Question 39

specialized trait for parasitic leeches

Answer 39

secrete a chemical called hirudin to prevent blood from coagulating

Question 40

adaptions of the leech for their parasitic way of life

Answer 40

1. flattened body 2. reduced coelom 3. chaetae are absent 4. suckers at BOTH anterior and posterior ends

Question 41

least to most inclusive

Answer 41

leeches: Clade Sedentarians: Annelida: Lophotrochozoan: Bilaterian: Eumetazoan: Metazoan