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MMLU-Pro / 2831 / Explain the method of copulation in the earthworms.

Problem

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question

Explain the method of copulation in the earthworms.

category

biology

options

  1. Earthworms reproduce asexually by fission.
  2. Earthworms engage in internal fertilization where one worm injects sperm directly into the ovaries of the other.
  3. Each earthworm fertilizes its own eggs internally without the need for a mate.
  4. Earthworms attract mates through airborne pheromones and mate on the surface without physical contact.
  5. Earthworms reproduce by budding, where small worms grow out of the parent's body.
  6. Earthworms exchange sperm by connecting their posterior ends and then separate to lay fertilized eggs.
  7. Earthworms reproduce by external fertilization in water.
  8. Earthworms lay eggs without any copulation.
  9. Two earthworms unite ventral surface to ventral surface with opposite anterior ends. They discharge sperm into the other's seminal receptacles. After separation, a cocoon is secreted for egg and sperm deposition.
  10. Two earthworms connect at their anterior ends and exchange sperm through their mouths before separating to lay eggs independently.

src

stemez-Biology

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Source and history

Official source

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