NEET 2025 Biology Model Questions with Answers
A photosystem is a protein-pigment complex found in the thylakoid membranes of plants, algae, and cyanobacteria, essential for photosynthesis. It captures light energy and converts […]
Category Archives: Physiology MCQ
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Calvin Cycle MCQs with Answers
The Calvin Cycle, also known as the Calvin-Benson cycle, is a series of biochemical reactions that occur in the stroma of chloroplasts during photosynthesis. It […]
MCQ on Brassinosteroids (Plant Hormone)
Brassinosteroids are a class of plant hormones essential for growth and development. They regulate processes like cell elongation, division, and differentiation, and help plants respond […]
MCQ on Gibberellins (Plant Hormone)
Gibberellins are plant hormones that act like growth spurts. They promote stem elongation, seed germination by breaking dormancy, and flowering in some plants. Imagine them […]
MCQ on Ethylene (Plant Hormone)
Ethylene, the “ripening hormone,” is a gas plants use to accelerate fruit ripening, leaf senescence, and flower petal abscission. It acts as a signal, triggering […]
MCQ on Cytokinin (Plant Hormone)
Cytokinin are like cellular cheerleaders in plants. They promote cell division, shoot growth, and delay aging, keeping leaves green and buds ready to sprout into […]
MCQ on Auxin (Plant Hormone)
Auxins are plant growth regulators that act like tiny conductors. They control cell elongation, root formation, and even tell plants which way to grow by […]
MCQ on Abscisic Acid (ABA)
Abscisic acid (ABA) is a plant hormone nicknamed the “stress hormone.” It helps plants cope with drought, cold, and other threats by triggering responses like […]
MCQ on Plant Hormones
Plant Hormone MCQ: Plant hormones, also known as phytohormones, are chemical substances that regulate various physiological processes in plants. They include auxins, gibberellins, cytokinins, ethylene, […]