The weight of the pitaya seed is given as \( 1 \times 10^{-3} \) ounce, which is already in standard form.
In standard form, a number is expressed as \( a \times 10^n \), where \( 1 \leq a < 10 \) and \( n \) is an integer.
So, the weight of the pitaya seed is \( 1 \times 10^{-3} \) ounce, which means it weighs 0.001 ounces. If you need to convert it to decimal form, it would be 0.001 ounces. But as you requested, \( 1 \times 10^{-3} \) is indeed the standard form of the weight.