To solve this problem, we need to analyze the reproductive structures of $$Chara,$$ a genus of green algae. Let's examine each option:$\newline \bullet$Option 1: Upper oogonium and lower round antheridium$\newline$ - In $$Chara,$$ the female reproductive structure (oogonium) is typically located above the male reproductive structure (antheridium).$\newline$ - This statement is correct.$\newline \bullet$Option 2: Globule and nucule present on the same plant$\newline$ - $$Chara$$ is monoecious, meaning both male (globule) and female (nucule) reproductive structures are present on the same plant.$\newline$ - This statement is correct.$\newline \bullet$Option 3: Upper antheridium and lower oogonium$\newline$ - This statement is incorrect because, in $$Chara,$$ the antheridium (male) is below the oogonium (female).$\newline$ - Therefore, this option is wrong.$\newline \bullet$Option 4: Globule is male reproductive structure$\newline$ - The globule is indeed the male reproductive structure in $$Chara.$\newline$ - This statement is correct.$\newline$Therefore, the correct answer is Option 3, as it incorrectly describes the position of the reproductive structures in $$Chara.