Here are the answers to your questions:
Question 1: Which structure connects the stigma to the ovary?
Answer: style
Question 2: What are the male and female reproductive parts of a flower?
Answer: the pistil and the stamen
Question 3: A bee will pollinate a flower if it moves pollen from
Answer: the anther to the stigma.
Question 4: Which structure is thick to protect some of the reproductive structures in flowers?
Answer: sepal
Feel free to ask if you have more questions!