Ownclasses

Which one of the following characteristics is common both in humans and adult frogs?

  • Four chambered heart

  • Internal fertilisation

  • Nucleated RBCs

  • Ureotelic mode of excretion

Answer

D.

Ureotelic mode of excretion

Most animals convert toxic ammonia into less toxic urea and excreted it, e.g., adult frog and man. 
Four-chambered heart is present in human but two-chambered in frog.
Nucleated RBCs are found in frog but not in human.
Fertilization is internal in human but external in frog. 

Most animals convert toxic ammonia into less toxic urea and excreted it, e.g., adult frog and man. 
Four-chambered heart is present in human but two-chambered in frog.
Nucleated RBCs are found in frog but not in human.
Fertilization is internal in human but external in frog.