Multiple choice

Caecilians copulate in which of the following modes?

  1. Partial internal fertilisation

  2. Complete internal fertilisation

  3. External fertilisation

  4. Parthenogenesis

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B Correct answer
Explanation

Caecilians use complete internal fertilisation as a mode of reproduction. The male caecilians have a long tube-like organ, the phallodeum, which is inserted into the cloaca of the female for two to three hours.

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