The cnidaria, jelly fish, are the first organisms to exhibit? a) an ectoderm layer b) endoderm layer with  digestive cells that release enzymes in to a digestive structure c) ectoderm cells that specialize to become cells which react to a stimulus and produce movement d) a water-based internal environment (prebiotic ocean) between the ectoderm and the endoderm e) all are true for cnidaria

Which of the following is an example of an animal that has true tissues, has a coelom, is triploblastic, and is a Deuterstome?   Question 8 options:   a)  Echinodermata and Chordata   b)  Cnidaria   c)  Ctenophora   d)  Placozoa

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

The jelly like substance found between ectoderm and endoderm in Cnidarians is called the _____.   Question 17 options:   a)  Osculum   b)  Nematocyst   c)  Mesoglea   d)  Choanocyte   e)  Mesoder

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 parts of the sea urchin egg occur outside of the cellular membrane? i) acrosome ii) jelly coat iii) vitelline layer  iv) cortical granule Group of answer choices A. iii and iv B. ii and iv C. i and ii D. i and iii E. ii and iii

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