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Plant Anatomy and Physiology MCQ question and answer with solution | Biology Gk MCQs

Learn Plant Anatomy and Physiology MCQ Questions and answers with easy and logical explanations in Biology Gk . Plant Anatomy and Physiology MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-9 section-6

Each section contains 100 MCQs on Plant Anatomy and Physiology .
81
Carbon dioxide assimilation by green sulphur bacteria requires the presence of which of the following as a hydrogen source?
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Answer & Solution
Answer: Option B
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82
Which one of the following agents does not contribute to propagation of plants through seed dispersal?
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Answer: Option B
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83
The visible spectrum ranges from
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Answer: Option C
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84
The largest single contribution of CO2 is made by
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Answer: Option D
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85
Which of the following enzymes is mainly responsible for reduction of molecular nitrogen?
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Answer: Option A
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86
When the chloroplast pigments absorb light
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Answer: Option C
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87
Match List-I (Diseases) with List-II (Causative agents) and select the correct answer:
List-I List-II
a. Covered smut of Barley 1. Alternaria solani
b. Early blight of Potato 2. Ustilago hordei
c. Red rot of Sugarcane 3. Xanthomonas citri
d. Citrus canker 4. Colletotrichum falcatum
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Answer: Option B
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88
Many species of plants are capable to survive and grow in low light intensity which are known as
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Answer: Option B
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89
In black rust of wheat, the fine, hair-like hyphal threads seen interspersed between the periphyses that extend through the ostiole and project much beyond the periphyses are known as
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Answer: Option C
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90
Which of the following normally occurs in radioactive fallout, has a half-life of 28 years and behaves like calcium in biogeochemical cycles?
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Answer: Option B
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