Question

1. planaria are a type of flatworm. analyze the model, which represents a mechanism of reproduction. select the correct statement. a) the flatworm is reproducing sexually, which requires mitosis. b) the flatworm is reproducing sexually, which requires mitosis. c) the flatworm is reproducing asexually, which relies on mitosis. d) the flatworm is reproducing sexually, which requires meiosis.

Explanation:

Planaria (flatworms) reproduce asexually via fragmentation/regeneration, which uses mitosis (cell division for growth/repair/asexual reproduction). Sexual reproduction needs meiosis (for gamete formation). Option A: Sexual reproduction needs meiosis, not mitosis. Option B: Sexual reproduction needs meiosis, not mitosis. Option C: Asexual reproduction (like in Planaria) uses mitosis (cells divide to form new organisms from fragments). Option D: Sexual reproduction uses meiosis, asexual uses mitosis. So C is correct as asexual reproduction in Planaria relies on mitosis.

Answer:

C. The flatworm is reproducing asexually, which relies on mitosis.