Final answer:
Without specific data on the composition of mixture A, the number of grams of seeds that grow in sunny, dry conditions cannot be determined. Assuming mixture A consists only of seeds that grow under those conditions, the amount would be 1,000 grams.
Step-by-step explanation:
We cannot calculate the exact number of grams of seeds in 1,000 grams of mixture A that grow in sunny, dry conditions without additional data specifying the contribution of each type of seed to the overall mixture. However, if we had a hypothetical scenario where mixture A contains only seeds that grow in such conditions, then the entire mixture would be suitable for sunny, dry environments. Therefore, assuming mixture A consists entirely of seeds that thrive in sunny, dry conditions, it would be 1,000 grams.
Factors that could influence the growth of these seeds, aside from the described sunny and dry conditions, might include the specific proportions of seed types in the mixture (such as yellow-green, yellow, green) and how well they germinate or survive when planted.
Referring to the provided options, such as a mixture with 100 percent yellow-green seeds or a mixture with a 1:1 ratio of yellow seeds to green seeds, we would need to know which of these seed types actually prefer sunny, dry conditions to determine how many grams of seeds from mixture A would grow effectively.