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Organisms Lab > 4. Arthropods > Flashcards

4. Arthropods Flashcards

1
Q

Which appendages replace jaws in Chelicerates?

A

Chelicerae

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2
Q

How many pairs of antennae do Myriapods have?

A

one

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3
Q

What subphylum do horseshoe crabs belong to?

A

Chelicerata

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4
Q

How many pairs of walking legs do organisms from the subphylum hexapoda have?

A

six

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5
Q

What is the exoskeleton of the horseshoe crab made from

A

chitin

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6
Q

Name the tagmata found in organisms from belonging to subphylum Myriapoda

A

Head / Trunk

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7
Q

Name the tagmata found in organisms belonging to subphylum crustacea

A

Cephalothorax / Abdomen

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8
Q

Name the two chambers of the stomach of crayfish

A

Cardiac stomach / Pyloric stomach

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9
Q

Name the tagmata found in organisms from subphylum hexapoda

A

Head / Thorax / Abdomen

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10
Q

What is the role of tympana

A

It is used for hearing

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11
Q

What is the role of gill bailer

A

Draw water, thus oxygen into the gill chamber

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12
Q

What is the role of the telson in the horseshoe crab

A

used for anchoring in sand, ploughing through sand, and righting when flipped over

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13
Q

What is the role of the pedipalps in the male horseshoe crab

A

Used to hold onto the female during reproduction

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14
Q

What is the role of spinnerets

A

makes silk for making webs

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15
Q

What is the role of pleopods

A

They are used to transfer sperm cells to the female

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16
Q

Name 3 different appendages found in the cephalothorax of the crayfish

A

Antennae / Walking legs / Chelipeds

17
Q

Name 2 specimen from todays lab that have a telson

A

Crayfish

Horseshoe crab

18
Q

Name specimen from today’s lab that has book lungs

A

Garden Spider

19
Q

Define tagmata

A

Distinct functional body units.

20
Q

Name 2 characteristics that generally make spiders sexual dimorphic

A

Size - Male are smaller

Pedipalps in male have evolved to be used for transferring sperm into female epigyne.

Organisms Lab (5 decks)

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