Question

A feature of reproduction that is common to Amoeba, Spirogyra and Yeast is that

• A. they reproduce asexually.
• B. they are all unicellular.
• C. they reproduce only sexually.
• D. they are all multicellular.

Answer 1

The correct option is A

they reproduce asexually.

The correct option is A.

Explanation for correct option-

1. Amoeba reproduces by binary fission, a type of asexual reproduction.
2. Spirogyra reproduces by the method of fragmentation, a type of asexual reproduction.
3. Yeast reproduces through the method of budding, another type of asexual reproduction.

Explanation for incorrect options-

Option B:

All given organisms are not unicellular. Amoeba is a unicellular organism; Spirogyra is multicellular algae; yeast is mostly unicellular but may sometimes adopt multicellular characteristics.

Option C:

None of the organisms mentioned above reproduce sexually. Binary fission occurs in Amoeba; in Spirogyra, fragmentation is observed; Yeast reproduces asexually through budding.

Option D:

They all are not multicellular. Only spirogyra from the organism mentioned above is a multicellular alga.

Final answer: The common feature of Amoeba, Spirogyra, and yeast is that all three organisms reproduce asexually.