Question Detail
Question
Regarding the appearance of the given organs in a tadpole of frog, which one of the following is the correct sequence?
Correct Answer
Option B is the correct answer.
Detailed Explanation
In frog tadpole development, the correct sequence of appearance is: mouth develops first, followed by external gills, then hind limbs appear, and finally fore limbs develop (fore limbs are typically the last to appear and often emerge after the hind limbs are well-developed). The fore limbs initially develop hidden within the opercular chamber before emerging.
Hint
Recall the chronological order of external structure development during amphibian metamorphosis.