Phylum Chordata: (Made up of 3 subphyla, two of which lack a true backbone) 1. State the four characteristics that all chordates have in common. а) b) c) d) 2. State the two subphyla, within this phylum, that lack a true backbone. a) State the animals that fall within each subphylum. b) Briefly describe what animals in each subphylum look like.

whihc of the following arthropod regions does not bear legs a) cephalothorax b) abdomen c) all of the above d) trunk e) thorax

Which of the following is the correct classification for this chordate animal: This vertebrate possesses hair and mammary glands.  They are endothermic.  This group gives birth to live young at a fetal stage.  Most then nurture their young in a pouch.   Question 31 options:   a)  Class Chondrichthyes   b)  Eutharia   c)  Cephalochordata   d)  Birds    e)  Urodela / Salamanders   f)  Class Osteichthyes   g)  Monotreme   h)  Reptiles (non avian)   i)  Anura / Frogs   j)  Superclass Agnatha   k)  Marsupial

9. In which of the following taxa would you find a foramen of Panizza? A) Crocodile B) Lungfish C) Bird D) Mammal E) Amphibian F) Turtle

Match the term that best fits the description or definition regarding phenotype and activities of primates. a)diurnal b)olfaction c)brachiation d)Strepsirhini e)rhinarium CHOOSE Wet fleshy pad on the end of the nose Arm swing Wet-nosed primates active during the day  the sense of smell

Which of the following is the correct classification for the following chordate animal: This is a vertebrate that does not have a jaw.  An example is the Hagfish which has a cartilaginous skull and skeleton.   Question 30 options:   a)  Urodela / Salamanders   b)  Eutharia   c)  Superclass Agnatha   d)  Birds    e)  Anura / Frogs   f)  Monotreme   g)  Class Osteichthyes   h)  Class Chondrichthyes   i)  Reptiles (non avian)   j)  Marsupial   k)  Cephalochordata

The only living group of mammals that lay eggs rather than give birth to live young are called: A) marsupials B) monotremes C) placentals D) eutherians

Which of the following structures is unique to mammals?   Question 6 options:   A)  Primitive meninx   B)  Dura mater   C)  Pia mater   D)  Secondary meninx