Answer:
Progesterone is one of the female sex hormones which performs important function during menstrual cycle, pregnancy and embryo development.
During follicular phase, it helps in the ovulation while during luteal phase it plays an important function of preparing the endometrium lining of the uterus. In addition, it also inhibits or decreases the production of FSH and LH during this phase with the help of negative feedback mechanism.
Progesterone gives negative feedback to hypothalamus and anterior pituitary which decreases or inhibits the secretion of FSH and LH. It is important as it prevents the ovulation of second egg prior to fertilization.
The correct answer is C. The sepal
Explanation:
Plants reproduction includes different types of sexual and asexual reproduction. In the case of sexual reproduction that implies gametes of different plants being fused through fertilization, this occurs through different structures in flowers which are the reproductive structures in many plants. This includes the pistil that produces ovules and it is considered as the female organ in plants, the style, and stigma that are part of the pistil, the statement that contains pollen or male gametophyte and therefore is considered as the male organ and includes the anther and filament. However, the sepal is not part of this reproductive system as these are structures similar to leaves that are in the base of the flower and protect this before it opens or blossoms.
The policy or action of using vigorous campaigning to bring about political or social change.
2. It is exposed to oxygen and it chemically changes. Usually seen as rust
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