AP EAMCET (EAPCET) Botany Multiple Choice Questions (MCQs)
Multiple Choice Questions (81-90) - Plant Physiology
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Which of the following experiments was an early experiment in the study of photosynthesis?
- A) Van Helmont's experiment
- B) Engelmann's experiment
- C) Priestley's experiment
- D) Julius Robert Mayer’s experiment
Answer: B) Engelmann's experiment
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Where does the light reaction of photosynthesis take place in a plant cell?
- A) Cytoplasm
- B) Chloroplasts (Thylakoid Membranes)
- C) Mitochondria
- D) Nucleus
Answer: B) Chloroplasts (Thylakoid Membranes)
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Which pigment is primarily responsible for absorbing light during photosynthesis?
- A) Carotenoids
- B) Chlorophyll a
- C) Xanthophylls
- D) Anthocyanins
Answer: B) Chlorophyll a
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In which part of photosynthesis does the splitting of water occur?
- A) Calvin Cycle
- B) Light Reaction
- C) Electron Transport System
- D) Krebs Cycle
Answer: B) Light Reaction
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Which of the following is the primary acceptor of CO2 in the Calvin Cycle?
- A) RuBP (Ribulose Bisphosphate)
- B) NADP+
- C) ATP
- D) Oxygen
Answer: A) RuBP (Ribulose Bisphosphate)
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Which of the following pathways is associated with plants that undergo the C4 photosynthetic pathway?
- A) Rice
- B) Wheat
- C) Maize (Corn)
- D) Potato
Answer: C) Maize (Corn)
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What is the primary cause of photorespiration in plants?
- A) Excessive light
- B) High levels of CO2
- C) Oxygen competing with CO2 at the active site of RuBisCO
- D) Lack of sunlight
Answer: C) Oxygen competing with CO2 at the active site of RuBisCO
-
Which of the following stages is a part of aerobic respiration in plants?
- A) Glycolysis
- B) Lactic Acid Fermentation
- C) Alcoholic Fermentation
- D) All of the above
Answer: A) Glycolysis
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The process of oxidative phosphorylation takes place in which part of the plant cell?
- A) Nucleus
- B) Mitochondria (Inner Membrane)
- C) Chloroplast
- D) Endoplasmic Reticulum
Answer: B) Mitochondria (Inner Membrane)
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Which of the following hormones is responsible for seed dormancy?
- A) Gibberellins
- B) Cytokinins
- C) Abscisic Acid
- D) Ethylene
Answer: C) Abscisic Acid
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