Gymnosperms are classified as which of the following?

seed producing plants

Explanation:

gynosperms also known as a acrogymnospermae are a group of seed producing plants that includes conifers cycads Ginkgo and gnetophytes the term gynosperm comes from a composite word in Greek meaning literally naked seeds.

I think

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.