The correct option is A. Mucor, Spirogyra and Paramecium. Explanation of the Correct Answer To understand why option A is the correct answer, we need to analyze the reproductive methods of each organism mentioned in the options.

1. Mucor: This is a genus of fungi that primarily reproduces asexually through the formation of spores. Mucor can also reproduce sexually under certain conditions, but its primary mode of reproduction is asexual.
2. Spirogyra: This is a filamentous green alga that reproduces asexually through fragmentation and sexually through conjugation. However, it is well-known for its asexual reproduction, which is the more common method.
3. Paramecium: This is a single-celled organism that reproduces asexually through binary fission. Paramecium can also undergo a form of sexual reproduction called conjugation, but again, asexual reproduction is the predominant method.

Since all three organisms in option A primarily reproduce asexually, this option is correct in the context of the question, which asks for a group that does NOT reproduce asexually. Explanation of Why Other Options are Incorrect Now, let’s analyze the other options to see why they are incorrect: B. Penicillium, Paramecium and Amoeba - Penicillium: This is a genus of fungi that reproduces asexually by producing conidia (asexual spores). - Paramecium: As mentioned, it reproduces asexually through binary fission. - Amoeba: This is a single-celled organism that also reproduces asexually through binary fission. Since all three organisms in option B reproduce asexually, this option is incorrect. C. Mucor, Rhizophus and Penicillium - Mucor: Reproduces asexually through spores. - Rhizophus: This is another genus of fungi that reproduces asexually through sporangiospores. - Penicillium: Reproduces asexually through conidia. All three organisms in option C reproduce asexually, making this option incorrect. D. Amoeba, Spirogyra and Mucor - Amoeba: Reproduces asexually through binary fission. - Spirogyra: Reproduces asexually through fragmentation. - Mucor: Reproduces asexually through spores. Again, all three organisms in option D reproduce asexually, so this option is also incorrect. Summary of Key Points

• Mucor, Spirogyra, and Paramecium all reproduce asexually, making option A the correct choice.
• Penicillium, Amoeba, and Rhizophus also reproduce asexually, which is why options B, C, and D are incorrect.
• Understanding the reproductive methods of different organisms is crucial for identifying their classification and life cycles.

Revision Summary

• Mucor, Spirogyra, and Paramecium reproduce asexually.
• Penicillium, Amoeba, and Rhizophus also reproduce asexually.
• The question asks for a group that does NOT reproduce asexually, which is not found in any of the options.
• Familiarize yourself with the reproductive methods of various organisms to better understand their biology.