Four of the five answers below are principal characteristics of all chordates. Select the exception. a. post-anal tail b. bony vertebra c. notochord d. dorsal nerve cord e. pharyngeal gill slits

Four of the five answers below are principal characteristics of all chordates. Select the exception.

a.    post-anal tail

b.    bony vertebra

c.    notochord

d.    dorsal nerve cord

e.    pharyngeal gill slits

Ans: b(  bony vertebra)

The first known primates were characterized as a. arboreal and nocturnal b. ground-dwelling and nocturnal c. arboreal and diurnal d. ground-dwelling and diurnal e. ground-dwelling and either nocturnal or diurnal

The first known primates were characterized as

a.   arboreal and nocturnal

b.   ground-dwelling and nocturnal

c.   arboreal and diurnal

d.   ground-dwelling and diurnal

e.   ground-dwelling and either nocturnal or diurnal

Ans:  arboreal and nocturnal