20 public questions tagged with this topic.
To maintain pregnancy by preparing the uterus correct as per Directions For Questions Directions: Rea biology principle.
Ref: NCERT Biology Class XII — Human Reproduction and Reproductive Health
The release of an egg from the ovary correct as per Directions For Questions Directions: Rea biology principle.
Ref: NCERT Biology Class XII — Human Reproduction and Reproductive Health
(A),(B), and(C) only correct as per Which of the following statements are co biology principle.
Ref: NCERT Biology Class XII — Human Reproduction and Reproductive Health
Lowering progesterone causes menstruation, corpus luteum degeneration withdrawal.
Ref: NCERT Biology Class XII — Human Reproduction and Reproductive Health
Estrogen levels gradually rise during the follicular phase and peak in the late follicular phase, just before the LH surge triggers ovulation. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.
During the luteal phase, the corpus luteum secretes high levels of progesterone to thicken the endometrium for implantation. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Reproduction and Reproductive Health, Topic: Gametogenesis, menstrual cycle and reproductive strategies.
FSH stimulates the growth and maturation of ovarian follicles during the early (follicular) phase of the menstrual cycle.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
The LH surge in the mid-cycle triggers the release of the oocyte from the follicle.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
The withdrawal of estrogen and progesterone levels, when fertilization does not occur, leads to the shedding of the endometrium (menstruation).
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
During the luteal phase, under the influence of progesterone, the endometrium becomes thick and receptive to the implantation of a fertilized egg.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Ovulation triggers the transition from the follicular phase to the luteal phase, during which the corpus luteum forms.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Estrogen levels gradually rise during the follicular phase and peak in the late follicular phase, just before the LH surge triggers ovulation.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
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