Week 10

Question 1

In what types of animals would cnidarians and ecinoderms be placed in, and why?

Answer 1

Cnidarians = Simple body plan, lacking deuterostome development
Ecindoderms = Deuterostome development, Bilaterally symmetrical larvae

Question 2

What are the main characteristics of chordates?

Answer 2

Notochord
Dorsal hollow nerve chord
Pharyngeal slits
Post-anal tail

Question 3

What are the main characteristics of vertebrates

Answer 3

Complex organ systems
Endoskeleton
Post-anal tail

Question 4

What was milestones in vertebrate evolution?

Answer 4

Development of jaws, Amniotic egg, Lungs, Increased heart chambers
Growth of legs

Question 5

What is the reproduction, respiration, body covering, and nitrogenous waste of class Agnatha

Answer 5

External fertilisation, metamorphosis. Gills. Mucus. Ammonia/urea

Question 6

What is the reproduction, respiration, body covering, and nitrogenous waste of class Chondricthyes

Answer 6

Internal fertilisation (Eggs/live). Gills. Tooth-like scales. Urea

Question 7

What is the reproduction, respiration, body covering, and nitrogenous waste of class Osteichthyes

Answer 7

External fertilisation (Eggs, Metamorphosis), Gills. Scales. Ammonia

Question 8

What is the reproduction, respiration, body covering, and nitrogenous waste of class Amphibian

Answer 8

Anamniotic eggs, (Larval, adult stages). Adult=lungs, larvae=gills. Moist glandular skin. In water=ammonia, land=urea

Question 9

What is the reproduction, respiration, body covering, and nitrogenous waste of class Reptilia

Answer 9

Amniotic eggs, some viviparous. Lungs. Scales. Uric acid

Question 10

What is the reproduction, respiration, body covering, and nitrogenous waste of class Aves

Answer 10

Amniotic eggs. Lungs. Feathers and scales. Uric acid

Question 11

What is the reproduction, respiration, body covering, and nitrogenous waste of class Mammalia

Answer 11

Amniotic eggs or viviparous, milk for young. Lungs. Hair. Urea