Arthropods Flashcards by Alexander Madison | Brainscape

Q

What does arthropoda mean

A

joined legs

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Q

how many germ layers do arthropods have?

A

3

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Q

Describe body symmetry of arthropods

A

bilateral

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Q

Are arthropods segmented?

A

yes

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Q

Arthropods have jointed ________ for movement

A

appendages

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Q

What are the 3 basic segments?

A

head, thorax, abdomen

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Q

What is a cephalothorax?

A

fused head and thorax

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Q

Describe the coelom of arthropods

A

true coelom

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Q

Describe the nervous system of arthropods

A

cephilization present; sharp senses: antennae, use of pheromones

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Q

Describe the skeleton of arthropods

A

exoskeleton

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Q

How many body openings do arthropods have

A

2

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Q

What are mandibles?

A

jaws

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Q

Describe the circulation of arthropods

A

open; 1 or more hearts

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Q

What do crustaceans use for respiration?

A

gills

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Q

What do arachnids use for respiration?

A

book lungs

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Q

What do insects use for respiration?

A

tracheal tubes-holes-spiracles

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Q

Are arthropods sexual or asexual?

A

sexual

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Q

Is fertilization internal or external on land?

A

internal

Q

Is fertilization internal or external in water?

A

external

Q

Describe sexes in arthropods

A

most have separate sexes, but some are hermaphrodites

Q

What is parthenogenesis?

A

development from unfertilized eggs

Q

What do crustaceans use for respiration?

A

gills

Q

How many body sections do crustaceans have?

A

2: cephalothorax & abdomen

Q

What are the sexes in crustaceans?

A

separate sexes

Q

What are the only type of terrestrial crustacean?

A

pill bugs (roly polys)

Q

What are chelipeds in crustaceans?

A

pincers; 1 pair

Q

What are swimmerets in crustaceans?

A

underside of tail used for swimming & reproduction; 5 pairs

Q

How many body segments to arachnids have?

A

two

Q

How many pairs of appendages do arachnids have?

A

6

Q

What is the chelicerae in arachnids

A

modified pincers or fangs; 1 pair

Q

What are pedipalps for in arachnids

A

handling food and sensing; 1 pair

Q

Describe respiration in spiders

A

they have book lungs

Q

Do spiders have mandibles?

A

no

Q

Do spiders have antennae?

A

no

Q

What is someone who studies insects

A

a weirdo (entomologist)

Q

How many body regions do insects have?

A

3

Q

How many pairs of legs to insects have?

A

6

Q

How many sets of wings do insects have?

A

2

Q

Do insects have antennae?

A

yes

Q

Describe seeing in insects

A

1+ pairs of compounds eyes and 3 simple eyes

Q

What are sensory hairs in insects?

A

cover antennaw and exoskeleton

Q

How do insects respire?

A

through tracheal tubes & spiracles

Q

How do insects hear?

A

through tympanum