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The Ascidian tadpole larva undergoes : -
  • a)
    Progressive metamorphosis
  • b)
    Retrogressive metamorphosis
  • c)
    Partial metamorphosis
  • d)
    Complete metamorphosis
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The Ascidian tadpole larva undergoes : -a)Progressive metamorphosisb)R...
The ascidian embryo also provides a unique opportunity to study evolutionary changes in development. Most ascidian species possess a tadpole larva and are known as urodele (tailed) species.During anural development, the tail muscle and notochord cells do not undergo morphogenetic movements or terminal differentiation.
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Most Upvoted Answer
The Ascidian tadpole larva undergoes : -a)Progressive metamorphosisb)R...
Metamorphosis is the phenomena in which there are changes which transform the organism form its juvenile stage to adult stage. In the case of retrogressive metamorphosis, the larva possesses the advanced features which get lost during the development. The adult is sedentary or degenerated with the primitive characters. Retrogressive metamorphosis is a characteristic of ascidians (Urochordata or Tunicata). The progressive, active and alert larva metamorphoses into a retrograde and sedentary bag-like creatures. The adult remains attached to a rocky substratum all their lives and use a current of water passing through their large and perforated pharynx to collect microorganisms on which they feeds.
Thus, the correct answer is option B.
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The Ascidian tadpole larva undergoes : -a)Progressive metamorphosisb)Retrogressive metamorphosisc)Partial metamorphosisd)Complete metamorphosisCorrect answer is option 'B'. Can you explain this answer?
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