10 public questions tagged with this topic.
If fertilization does not occur, the withdrawal of progesterone and estrogen leads to the degeneration of the endometrium and the onset of menstruation.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Some hormones act immediately, while others have long-term effects (e.g., growth hormone, thyroid hormones).
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Mechanism of Hormone Action - Second Messengers
Progesterone, secreted by the corpus luteum and placenta, plays a key role in maintaining pregnancy.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Gonads - Testis and Ovary Hormones
Cortisol is a glucocorticoid that regulates glucose metabolism by stimulating gluconeogenesis.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Adrenal Gland - Cortex and Medulla
The pineal gland secretes melatonin, which regulates the sleep-wake cycle and circadian rhythms.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Thyroxine (T4) is a major hormone secreted by the thyroid gland that regulates metabolism in the body.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Somatostatin, secreted by the hypothalamus, inhibits the release of growth hormone from the pituitary gland.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine System and Hypothalamus Pituitary Axis
The posterior pituitary stores and releases oxytocin and ADH, but these hormones are produced by the hypothalamus.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine System and Hypothalamus Pituitary Axis
Aldosterone regulates sodium reabsorption in the distal convoluted tubule and collecting ducts, aiding in water retention.
Ref: NCERT Class 11 Biology Chapter 16: Excretory Products and their Elimination Regulation of Kidney Function - RAAS ADH ANF
That points to C: JAZ. Compared with the other options, JAZ is the one that correctly describes the Phytohormone ALL concept. The wrong ones are A) AUX/IAA; B) DELLA; D) EBF1. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
