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Plant Physiology MCQs | Plant Physiology MCQs and Answers for competitive exams

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Free download in PDF Plant Physiology MCQs and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries.
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81 Main function of lenticel is
[A] transpiration
[B] guttation
[C] gaseous exchange
[D] bleeding
Answer: gaseous exchange
82 Choose the correct match Bladderwort, sundew, venus flytrap:
[A] Nepenthes, Dionea, Drosera
[B] Nepenthes, Utricularia, Vanda
[C] Utricularia, Drosera, Dionea
[D] Dionea, Trapa, Vanda
Answer: Utricularia, Drosera, Dionea

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83 Seed dormancy is due to the
[A] ethylene
[B] abscisic acid
[C] IAA
[D] starch
Answer: abscisic acid
84 Cellular totipotency is demonstrated by
[A] only gymnosperm cells
[B] all plant cells
[C] all eukaryotic cells
[D] only bacterial cells
Answer: all plant cells
85 Which one of the following concerns photophosphorylation?
[A] ADP + AMP ATP
[B] ADP + Inorganic PQ,
[C] ADP + Inorganic P04 ATP
[D] AMP + Inorganic PQ, ATP
Answer: ADP + Inorganic PQ,
86 ABA is involved in
[A] shoot elongation
[B] increased cell division
[C] dormancy of seeds
[D] root elongation
Answer: dormancy of seeds
87 In soil, water available for plants is
[A] gravitational water
[B] chemically bound water
[C] capillary water
[D] hygroscopic water
Answer: capillary water
88 Carbon dioxide acceptor in C3-plants is
[A] PGA
[B] PEP
[C] RuDP
[D] none of these
Answer: RuDP
89 The first step for initiation of photosynthesis will be
[A] photolysis of water
[B] excitement of chlorophyll molecules due to absorption of light
[C] ATP formation
[D] glucose formation
Answer: excitement of chlorophyll molecules due to absorption of light
90 When the plants are grown in magnesium deficient but urea rich soil, the symptoms expressed are
[A] yellowish leaves
[B] colourless petiole
[C] dark green leaves
[D] shoot apex die
Answer: yellowish leaves

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