Lab Practical

Question 1

Phylum: Echinodermata

Answer 1

Sea stars, urchins, and cucumbers
Marin animals
Pentaradial symmetry in adults
Water vascular system
Lack of Cephalization

Question 2

Class: Echinoidea

Answer 2

Phylum Echinodermata
Globular or disc shaped
No arms
Compact skeleton called a test
Movable spines
Tube feet with suckers

Question 3

Class Asteroidea

Answer 3

Phylum Echinodermata
Appendages radiate from a central disc
Tube feet with suckers
Madreporite aboral

Question 4

Class: Holothuroidea

Answer 4

Phylum Echinodermata
Spines and arms absent
Tube feet with suckers
Madreporite internal

Question 5

Phylum Chordata

Answer 5

Subphylums: Cephalochordata and Vertebrata

Question 6

SubPhylum Cephalochordata

Answer 6

Lancelets
Marine
Segmented and elongated body
Notochord extends the legth of the body

Question 7

SubPhylum Vertebrata

Answer 7

Vertebrates
Notochord
Dorsal hollow nerve chord
Pharyngeal slits or pouches
Endostyle or thyroid gland
Postanal tail

Question 8

Class Petromyzontida

Answer 8

Slender, eel like body
no paired appendages
cartilaginous skeleton
no jaws or scales

Question 9

What Phylum does the Class Petromyzontida belong to?

Answer 9

Chrodata

SubPhylum Vertebrata

Question 10

Class Chondrichthyes

Answer 10

Skates, Sharks, and Rays
Jaws present
Paired appendages and cartilaginous skeleton
No swim bladder and no operculum

Question 11

What Phylum does the Class Chondrichthyes belong to?

Answer 11

Chrodata

SubPhylum Vertebrata

Question 12

Class Actinopterygii

Answer 12

Bony skeleton

Swim bladder and operculum present

Question 13

What Phylum does the Class Actinopterygii belong to?

Answer 13

Chrodata

SubPhylum Vertebrata

Question 14

Class Amphibia

Answer 14

Skin with mucoid secretions
larvae usually aquatic
3 chambered heart
Respiration by lungs, gills, skin, and mouth

Question 15

What Phylum does the Class Amphibia belong to?

Answer 15

Chrodata

SubPhylum Vertebrata

Question 16

What Class does the Order Urodela belong to?

Answer 16

Amphibia

Question 17

Order Urodela

Answer 17

Body with head, trunk, and long tail
2 pairs of equal size limbs
Some respire through the skin

Question 18

What Class does the Order Gymnophiona belong to?

Answer 18

Amphibia

Question 19

Order Gymnophiona

Answer 19

Body limbless and wormlike
Small scales present in some
Tail absent

Question 20

What Class does the Order Anura belong to?

Answer 20

Amphibia

Question 21

Order Anura

Answer 21

Frogs and toads
head and trunk fused, tail absent
Two pairs of limbs, hind-limbs elongated

Question 22

Class Reptilia

Answer 22

Dry skin, keratinized scales
Respiration via lungs
3 chambered heart - Except for Crocodilians
Internal fertilization
2 pairs of legs

Question 23

What Class does the Order Testudines belong to?

Answer 23

Reptilia

Question 24

Order Testudines

Answer 24

Turtles
Dorsal - Carapace
Ventral - Plastron
Jaws with/out teeth
Vertebrae and ribs fused to the carapace

Question 25

What Class does the Order Squamata belong to?

Answer 25

Reptilia

Question 26

Order Squamata

Answer 26

Lizards and snakes

Males have paired copulatory organs

Question 27

What Class does the Order Crocodilia belong to?

Answer 27

Reptilia

Question 28

Order Crocodilia

Answer 28

Crocodiles and alligators
Skull is elongated and massive
4 chambered heart
Forelimbs with 5 digits and hindlimbs with 4

Question 29

Class Aves

Answer 29

Forelimbs adapted for flight
Light and hollow bones
beak with no teeth
internal fertilization - only left ovary and oviduct
4 chambered heart

Question 30

Class Mammalia

Answer 30

Mammary Glands
Endothermic
4 Chambered heart
internal fertilization

Question 31

InfraClass Ornithodelphia

Answer 31

“Bird Womb”
Oviparous, lack nipples
Duck billed platypus

Question 32

InfraClass Metatheria

Answer 32

“Other Breasts”
Abdominal Pouch (marsupium)
Nipples inside marsupium
Kangaroos and koalas

Question 33

InfraClass Eutheria

Answer 33

“True Breasts”
Placental, viviparous
Nipples Present
Whales, elephants, humans