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annelida Flashcards

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Biology 101 flashcards
1
Q

Annelids is __ word

A

Latin

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2
Q

Annelida means

A

little rings

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3
Q

segment of annelids

A

Segmented

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4
Q

symmetry of annelids

A

Bilateral
triploblastic
coelomate

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5
Q

segments of annelids are separated by?

A

septa

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6
Q

Neiris are __ water annelids

A

marine

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7
Q

stylaria are ___ water annelids

A

fresh water

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8
Q

earth worm (lubricina) is __

A

Damp soil annelid

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9
Q

Hirudo is

A

parasitic leech

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10
Q

The mouth of annelida overhung by a lobed structure ___

A

the prostomium.

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11
Q

Excretion in nematode takes place by specialized structures called __

A

nephridia

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12
Q

CNS of annelida is

A

well developed

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13
Q

cns of annelida consists of

A

simple brain
double longitudinal ventral nerve cord

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14
Q

respiratory system in annelids is

A

absent

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15
Q

The type of muscles in annelids are

A
  1. circular
  2. longitudinal
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16
Q

means of locomotion in annelids

A

chetae or setae in earthworm
parapodia in nereis
no setae in leeches

17
Q

reproduction in annelids

A

mostly sexual
hermaphrodite in all except nereis ( separate sexes )

18
Q

larva of annelids is called

A

trocophore larva

19
Q

___ are termed as natural plough

A

earthworm

20
Q

How many classes in annelids

A
  1. Polychaeta
  2. Oligochaeta
  3. Hirudinea
21
Q

Polychaeta have head region and eye structure called

A

Palps and tentacles

22
Q

polychaeta are ___ living annelids

A

marine

23
Q

organ of locomotion in polychaeta

A

parapodia

24
Q

example of polychaeta?

A

Nereis, Chaetopterus

25
Q

Locomotory organ in oligochaeta

A

Setae

26
Q

Example of oligochatae?

A

Lumbricus terristris
pheretima posthuma

27
Q

Class hirudinea locomotory organ

A

none, uses suckers

28
Q

each segment of hirudinea has circular rings called

A

annuli

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