7 public questions tagged with this topic.
Melatonin, secreted by the pineal gland, regulates the body's sleep-wake cycle and circadian rhythm.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates the circadian rhythm, including sleep-wake cycles.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates sleep-wake cycles and biological rhythms.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates circadian rhythms, including the sleep-wake cycle.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine System and Hypothalamus Pituitary Axis
24 h reflects key principle in quiz on behavior pyqs solved-section f, where evolutionary mechanisms shape genetic variation and adaptation. In this context, 24 h aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why 24 h fits helps integrate natural selection, environment.
Ref: Alcock, Animal Behavior, Inclusive Fitness and Haplodiploidy.
GIGANTEA (C) is correct here. This is core PSS-Sec-E-Sensory biology: once you know the definition or pathway step, GIGANTEA is the clear fit. The wrong ones are A) COP1; B) HY5; D) PHOT1. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
Correct option is B, Darkness. In Endocrinology, the accurate description is Darkness, and that is what you should commit to memory. Keep the definition tight and the role clear — Darkness is the option that correctly names the structure, process, or principle asked for in Endocrinology. Then Darkness is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Darkness. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.
Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.
