कृषि, पशु र वन विज्ञान B.Sc. Ag र B.V.Sc. & A.H. प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Ag र B.V.Sc. & A.H. प्रवेश
B.Sc. Ag & B.V.Sc. Entrance · Agriculture, Veterinary & Forestry Entrance
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि, पशु र वन विज्ञान 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 number of moles in 88 g of carbon dioxide (C = 12, O = 16) is:
सही उत्तर: घ) 2
Molar mass of CO₂ = 44 g/mol; n = 88/44 = 2 mol.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The transitional zone between two different ecosystems, such as between a forest and a grassland, is called a/an:
सही उत्तर: घ) Ecotone
An ecotone is a zone of transition between two communities and often has more species (edge effect).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An interaction in which one species is harmed while the other is unaffected, as when Penicillium secretes a substance that kills bacteria, is:
सही उत्तर: क) Amensalism
In amensalism (−, 0) one organism is inhibited while the other neither gains nor loses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Gause's 'competitive exclusion principle' states that:
सही उत्तर: ग) Two species competing for the same limited resources cannot coexist indefinitely
Gause showed with Paramecium species that the better competitor eventually eliminates the other when they share the same niche.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The population growth curve of a species in an environment with limited resources (logistic growth) is:
सही उत्तर: ख) Sigmoid (S-shaped)
Logistic growth slows as the population approaches carrying capacity (K), giving an S-shaped curve; unlimited growth gives a J-shaped curve.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Avena curvature test, a bioassay for auxin using oat coleoptiles, was developed by:
सही उत्तर: क) F. W. Went
Went placed auxin-containing agar blocks on one side of decapitated oat coleoptiles; the curvature was proportional to auxin concentration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Kinetin, the first cytokinin to be discovered, was isolated by Skoog and Miller from:
सही उत्तर: ख) Autoclaved herring sperm DNA
Kinetin (6-furfurylaminopurine) was obtained from heated herring sperm DNA; zeatin was later isolated from maize.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The respiratory quotient (RQ) when fats such as tripalmitin are the respiratory substrate is about:
सही उत्तर: घ) 0.7
Fats are poor in oxygen and need much O2 for oxidation, so CO2 released / O2 used is about 0.7.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The increase in the rate of photosynthesis when far-red light (above 680 nm) is supplemented with light of shorter wavelength, which suggested the existence of two photosystems, is called the:
सही उत्तर: घ) Emerson enhancement effect
Emerson found that far-red light plus shorter-wavelength red light gives a higher rate than the sum of the two given separately, pointing to two cooperating photosystems.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'law of limiting factors' in photosynthesis was proposed in 1905 by:
सही उत्तर: घ) F. F. Blackman
Blackman stated that when a process depends on several factors, its rate is limited by the factor present in the least amount.
💬 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।
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