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Bio Lab > Week 4 > Flashcards

Week 4 Flashcards

(54 cards)

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1
Q

Annelids include

A

Earthworms
Leeches
Polychaetes

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2
Q

Most distinctive characteristic of annelids

A

Segmentation

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3
Q

Annelids have small bristle appendages that occur in pairs on lateral/ventral surfaces called

A

Setae

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4
Q

Setae are filled with what for defense

A

Poison

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5
Q

Leeches that lack segmentation and have no setae

A

Hirudineans

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6
Q

Most diverse/abundant phylum of animals

A

Anthropods

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7
Q

Anthropoids are successful in habitats because of their

A

Segmentation which allows division of labor between regions

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8
Q

What is used to classify anthropods

A

Arrangement of segments and structure of appendages

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9
Q

What is the exoskeleton of Arthropods made of?

A

Chitin

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10
Q

What does chitin do?

A

Protects from predators and environment
Prevents desiccation
Place for muscle attachment

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11
Q

Chelicerates are

A

Spiders
Scorpions
Horseshoe crabs

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12
Q

Why are crustaceans different from anthropods

A

Biramous appendages

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13
Q

What does biramous mean

A

Double branched appendage

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14
Q

5 anterior pairs of crustacean appendages

A 
First antennae 
Second antennae 
Mandibles 
Maxillae 
Maxillipeds
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15
Q

What is the shape of crustacean hearts?

A

Diamond shaped

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16
Q

Group of anthropods that can breathe through channels in body. Includes myriapods and hexapods

A

Tracheata

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17
Q

Includes centipedes and millipedes

A

Myriapoda

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18
Q

Appendages modified for feeding

A

Maxillipeds

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19
Q

Largest group of organisms on earth

A

Insects (hexapods)

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20
Q

3 desperate body regions of insects

A

Head
Thorax
Abdomen

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21
Q

Deuterostomes

A

Echinoderms

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22
Q

Deuterstomes differ in embryonic development because

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A

They develop anus to mouth

23
Q

What ability do echinoderms posses

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A

Ability to regenerate after losing portions of their body

24
Q

5 classes of echinoderms

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A 
Asteroida 
Ophiuroidea 
Echinoidea 
Crinoidea 
Holothruroidea
25
Chordata 4 shared key features
Dorsal hollow nerve cord Notochord Pharyngeal slits Postanal tail
26
2 classes of invertebrates
Tunicates | Lancelets
27
Chondrichthyes are
Echotherms and sharks
28
Vertebrates have a distinctive
Head and vertebral column
29
Jawless fishes with cartilaginous endoskeletons
Agnathans
30
Do not regulate their own temperature and external changes affect internal temp
Ectotherms
31
Ectothermal fish
Agnathans
32
Most diverse group of vertebrates
Teleosts
33
Features of teleosts
Bony endoskeleton Modified full arches Internal air bladder for balance and buoyancy
34
Body temperatures vary as ambient temperatures change
Ectothetmic
35
The first land vertebrates
Amphibians
36
What terrestrial vertebrate Lay eggs in water
Amphibians
37
Major evolutionary events enabling amphibian terrestrial existence
Development of legs and lungs
38
Why are amphibian lungs primitive
They have a slow diffusion rate of oxygen into the blood
39
What accounts for most of the oxygen diffusion in amphibians
Soft moist skin
40
Where does air exchange occur in reptiles
Lungs
41
Outermost membrane of reptile eggs
Chorion
42
3 chambers of reptile hearts
Atria Ventricle Aorta
43
Body temperatures depends on environment
Poikilothrrmic
44
What Thermic are reptiles
Poikilothermic
45
Maintain constant body temperatures
Homeothermic
46
What thermic are birds
Homeothermic
47
Adaptations for flight
Constant energy supply High metabolism Lightweight skeleton Efficient respiratory system
48
Birds recieve what during inhalation and exhalation
Constant supply of fresh air
49
How many chambers do bird hearts have
Four chambers
50
Is the development of bird embryos external or internal
External
51
What is a birds most highly developed sense
Vision
52
Covered with insulating body fat and hair
Mammals
53
Maintain homeostasis (constant body temperatures)
Birds and mammals
54
How many chambers do mammal hearts have
4

Bio Lab (6 decks)

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