In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[EX Q]: Question: When does the diploid zygote form? Answer: after the pollen tube
[EX A]: After the pollen tube does the diploid zygote form.

[EX Q]: Question: Trees release what gas as a byproduct of photosynthesis, thereby facilitating human respiration? Answer: oxygen
[EX A]: Trees release oxygen gas as a byproduct of photosynthesis, thereby facilitating human respiration.

[EX Q]: Question: What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus? Answer: female reproductive system
[EX A]:
The female reproductive system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus.

