Final Answer:
What is common between internal fertilization in animals and the production of pollen in plants is that both processes involve the transfer of reproductive cells or structures to facilitate fertilization.
Step-by-step explanation:
Internal fertilization in animals and the production of pollen in plants are both mechanisms designed to enhance the efficiency of fertilization. In animals with internal fertilization, such as mammals, the male reproductive cells (sperm) are directly transferred to the female reproductive system, increasing the chances of successful fertilization.
This method is particularly advantageous in terrestrial environments where external fertilization would be impractical.
Similarly, in plants, the production of pollen serves as a mobile and protected means of transporting male gametes (sperm cells) to the female reproductive structures. Pollen grains contain the male reproductive cells and are often carried by wind, insects, or other vectors to reach the female reproductive organs, such as the stigma.
This method allows plants to achieve fertilization more efficiently, especially in environments where direct contact between male and female reproductive organs might be challenging.
In summary, both internal fertilization in animals and the production of pollen in plants represent adaptations that facilitate the transfer of reproductive cells, increasing the likelihood of successful fertilization and ensuring the continuation of the species.