वनस्पति विज्ञान – Botany – Botany MCQ
वनस्पति विज्ञान – Botany – CEE प्रवेश
Botany · Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · ४०७ प्रश्न
४०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
वनस्पति विज्ञान – Botany: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Tetradynamous stamens (four long and two short) are characteristic of the family:
सही उत्तर: क) Brassicaceae
Members of Brassicaceae (Cruciferae), such as mustard, have six stamens in a 2+4 arrangement. Fabaceae is known for diadelphous stamens.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Basal placentation occurs in:
सही उत्तर: घ) Sunflower
In basal placentation a single ovule is attached at the base of the ovary, as in sunflower and marigold. Argemone shows parietal placentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Free central placentation is found in:
सही उत्तर: ख) Dianthus
In Dianthus and Primrose, ovules are borne on a central axis without septa. Lemon has axile placentation because septa are present.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Axile placentation is seen in:
सही उत्तर: घ) Tomato
In axile placentation the ovules are attached to a central axis in a multilocular ovary, as in tomato, lemon and China rose. Dianthus has free central placentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Parietal placentation is characteristic of:
सही उत्तर: क) Mustard
In mustard and Argemone, ovules develop on the inner wall of the ovary (parietal). Tomato shows axile placentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Marginal placentation is found in:
सही उत्तर: क) Pea
In marginal placentation, ovules are borne along the ridge of a single-carpelled ovary, as in pea. Mustard shows parietal placentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Red rot of sugarcane is caused by:
सही उत्तर: ग) Colletotrichum falcatum
Red rot of sugarcane is a fungal disease caused by Colletotrichum falcatum. Puccinia graminis causes black stem rust of wheat.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Late blight of potato is caused by:
सही उत्तर: ख) Phytophthora infestans
Phytophthora infestans caused the Irish famine through late blight of potato. Albugo candida causes white rust of crucifers.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Rust disease of wheat is caused by:
सही उत्तर: ख) Puccinia
Wheat rust is caused by the basidiomycete fungus Puccinia. Ustilago causes smut diseases.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The common edible mushroom Agaricus belongs to:
सही उत्तर: क) Basidiomycetes
Agaricus produces basidiospores on basidia, placing it in Basidiomycetes (club fungi). Yeast and Penicillium are Ascomycetes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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