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STD 11 - 17. Locomotion and movement — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 17. Locomotion and movement1 Mark
MCQ
There are seven cervical vertebrae in almost
  • A
    All vertebrate
  • B
    All amphibian
  • C
    All reptile
  • ✓
    All mammals
✓

Answer

Correct option: D.
All mammals
d
$1)$ Most mammal have $7$ cervical vertebrae. There are four exceptions as follows. $a.\;2-$toed sloth $=6$ Cervical vertebrae. $b.$Manatee $=6$ Cervical vertebrae. $c.$ Anthear$= $$8$ Cervical vertebrae. $d.3-$toed sloth $=9$ Cervical vertebrae. $2)$ amphibians $=1$ cervical vertebrae $=$ atlas ( ossified $7$ parts). $3)$ reptiles $=7$ cervical vertbrae

 

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