Final answer:
Among yeast, strawberries, aphids, and goldfish, goldfish is the only organism that does not reproduce asexually. Goldfish employ sexual reproduction with distinct male and female individuals taking part in external fertilization.
Step-by-step explanation:
The subject of the question pertains to asexual reproduction in different types of organisms. Asexual reproduction is a type of reproduction where an organism can reproduce and create offspring without the involvement of another organism. Among the options provided, yeast, strawberries, and aphids do reproduce asexually. Yeast replicates through budding, strawberries propagate by runner (a form of vegetative propagation), and aphids can reproduce asexually via parthenogenesis. However, goldfish do not reproduce asexically, they undergo sexual reproduction, involving the fertilization of eggs.
The organism which does not reproduce asexually among the choices given is
goldfish
This is because they reproduce sexually, with distinct male and female individuals employing external fertilization. In this process, females lay eggs which are then fertilized by sperm from the males.
Conclusion:
Therefore, it's essential to understand the various mechanisms of reproduction to differentiate between organisms that reproduce asexually versus those that reproduce sexually.
Learn more about Asexual Reproduction