The key event in the transition of the amphibians from wa...
The key event in the transition of the amphibians from water to land is the ________
replacement of the gills with lungs
possession of webbed limbs
limbs
possession of tympanic membrane
Correct answer is A
Amphibians display some interesting and changing characteristics as they metamorphose through various forms on their way to adulthood. The frog, for instance, begins life underwater as a larva with gills and becomes and air-breather with lungs as an adult.
&therefore4; in case of draught, frog can amphibians can use lungs to breathe on land.
Which of the following is an example of intraspecific competition? ...
A one-seeded fruit in which the pericarp has fused with the seed coat is classified as ...
Which of the following statements about poliomyelitis is not correct. It ...
The blood vessel that carries blood from the alimentary canal to the liver is the ...
Which of the following statements is false? ...
The theory of survival of the fittest was propounded by ...
Which of the following nucleotides is not found in the DNA molecules? ...