4 public questions tagged with this topic.
Charles Darwin and his son Francis observed that coleoptiles of canary grass bend towards light, demonstrating phototropism.
Ref: NCERT Class 11 Biology Chapter 13: Plant Growth and Development Plant Growth Regulators - Cytokinins Ethylene and Abscisic Acid
Oat (C) is correct here. This is core Auxin Phytohormone: once you know the definition or pathway step, Oat is the clear fit. The wrong ones are A) Wheat; B) Rice; D) Maize. 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.
B fits best: High light. Keep the Phototropin+All basics straight and High light stands out as the precise answer. Avoid: A) Low light; C) Red light; D) Darkness. Light and flowering items often hinge on which photoreceptor or day-length rule is in play.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
That points to C: Low and high blue light. Compared with the other options, Low and high blue light is the one that correctly describes the Phototropin+All concept. The wrong ones are A) Only low light; B) Only high light; D) Red light. 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.
