चिकित्सा शिक्षा आयोग (CEE) बीएस्सी नर्सिङ र बीएनएस प्रवेश तयारी
चिकित्सा शिक्षा आयोग (CEE) – बीएस्सी नर्सिङ र बीएनएस प्रवेश
B.Sc. Nursing & BNS Entrance · Medical Education Commission – CEE
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MBBS/BDS/Nursing प्रवेश: 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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The water fern Azolla is used as a biofertiliser in rice fields because it harbours the nitrogen-fixing cyanobacterium:
सही उत्तर: ख) Anabaena
Azolla leaves contain cavities in which Anabaena azollae lives and fixes atmospheric nitrogen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In mosses, the creeping, green, branched filamentous stage that develops directly from a germinating spore is the:
सही उत्तर: ग) protonema
The moss spore germinates into a protonema, on which buds develop into the leafy gametophores; the prothallus is the gametophyte of ferns.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The sporophyte of a moss such as Funaria is differentiated into:
सही उत्तर: ख) foot, seta and capsule
The moss sporophyte, attached to the gametophyte, has a foot, a stalk (seta) and a capsule in which spores are formed by meiosis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The unicellular green alga that is rich in protein and used as a food supplement, even by space travellers, is:
सही उत्तर: ग) Chlorella
Chlorella (and the cyanobacterium Spirulina) are protein-rich and used as food supplements.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The characteristic olive-green to brown colour of brown algae (Phaeophyceae) is due to the pigment:
सही उत्तर: ख) fucoxanthin
Brown algae contain chlorophyll a and c, carotenoids and the xanthophyll fucoxanthin, which gives them their brown shade.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The stored food of red algae (Rhodophyceae) is:
सही उत्तर: ग) floridean starch
Red algae store floridean starch, which is very similar to amylopectin and glycogen; laminarin and mannitol are reserves of brown algae.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The chloroplasts of Spirogyra are:
सही उत्तर: घ) ribbon-shaped and spirally arranged
Spirogyra has one or more ribbon-shaped chloroplasts arranged spirally, with many pyrenoids; Chlamydomonas has a cup-shaped chloroplast.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fusion of a large, non-motile female gamete with a smaller, motile male gamete (oogamy) occurs in:
सही उत्तर: क) Volvox and Fucus
Volvox (green alga) and Fucus (brown alga) are oogamous; many Chlamydomonas species and Ulothrix are isogamous and Spirogyra reproduces by conjugation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A meiocyte of rice has 24 chromosomes. The number of chromosomes in each nucleus of its pollen grain is:
सही उत्तर: ग) 12
Meiocytes are diploid (2n = 24); meiosis halves the number, so the haploid pollen has n = 12.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The root-tip cells of onion have 16 chromosomes. The number of chromosomes in its endosperm cells is:
सही उत्तर: क) 24
Root-tip cells are diploid (2n = 16), so n = 8; the triploid endosperm has 3n = 24 chromosomes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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