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In flatworms
Option: 1
Development is direct and fertilization is external
Option: 2
Development is indirect and fertilization is external
Option: 3
Development is indirect and fertilization is internal
Option: 4
Development is indirect and fertilization is internal
Answers (1)
Reproduction and Development in Platyhelminthes -
- The Platyhelminthes are hermaphroditic animals.
- The male and female sex organs are present in the same animal.
- Fertilization is internal and development is indirect.
- Many larval stages are formed before an adult is produced.
- Bladder Worm (cysticercus) is the larval stage seen in Tapeworm
- Some animals, like Planaria, show the high capacity of regeneration.
- Therefore, asexual reproduction occurs through regeneration.
-
Fertilization is internal and development is indirect. Many larval stages are formed before an adult is produced.
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