This quiz works best with JavaScript enabled. Home > Agriculture > Crop Physiology > Research > Crop Physiology – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Crop Physiology Quiz 4 (6 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which hormone causes internodes to lengthen? A) Tropism. B) Etiolation. C) Gibberelins. D) Cytokins. Show Answer Correct Answer: C) Gibberelins. 2. Which of the following is a water soluble pigment? A) Chl b. B) Phycobilins. C) Chl a. D) Carotenoids. Show Answer Correct Answer: B) Phycobilins. 3. The photosynthetic pigments are located in ..... A) Thylakoid membrane. B) Lumen. C) Stroma. D) None of the above. Show Answer Correct Answer: A) Thylakoid membrane. 4. To express the relationship between the number of molecules reacting with the number of photons absorbed, the concept of ..... was introduced. A) Photon analysis. B) Quantum efficiency. C) Quantum mechanism. D) Quantum Yield. Show Answer Correct Answer: B) Quantum efficiency. 5. What is the definition of day neutral plants? A) Plant hormone that causes leaves and stems to grow towards the light. B) Green pigment needed for photosynthesis. C) Green pigment needed for photosynthesis. D) Plants that don't require a specific photoperiod. Show Answer Correct Answer: D) Plants that don't require a specific photoperiod. 6. Thigmonasty is the movement of a plant or a plant part in response to ..... A) Physical contact. B) Water. C) Gravity. D) Light. Show Answer Correct Answer: A) Physical contact. ← PreviousRelated QuizzesCrop Physiology QuizzesAgriculture QuizzesCrop Physiology Quiz 1Crop Physiology Quiz 2Crop Physiology Quiz 3 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books