Last Updated：2025/11/22
Sentence
一部の環形動物の表皮にある分泌性の膨らみ（環帯）は、ミミズの繁殖期に繭を分泌する。
Quizzes for review
The clitellum secretes a cocoon during the earthworm's reproductive cycle.
See correct answer
The clitellum secretes a cocoon during the earthworm's reproductive cycle.
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