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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Inulin, a storage polysaccharide found in dahlia tubers, is a polymer of:
सही उत्तर: ख) Fructose
Inulin is a polyfructan, i.e. a polymer of fructose units, unlike starch and glycogen which are polymers of glucose.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the open sea (ocean) ecosystem, the pyramid of biomass is generally:
सही उत्तर: ग) Inverted
In the sea the standing biomass of fast-reproducing phytoplankton at any moment is smaller than that of the fishes feeding on them, so the biomass pyramid is inverted.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Lecithin is an example of a:
सही उत्तर: ग) Phospholipid
Lecithin (phosphatidylcholine) is a phospholipid containing glycerol, fatty acids, phosphate and choline; it is a major membrane lipid.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The most abundant protein in the whole biosphere is:
सही उत्तर: घ) RuBisCO
RuBisCO, the CO2-fixing enzyme of photosynthesis present in all green plants, is the most abundant protein on earth; collagen is most abundant in animals.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A diploid cell with 2n = 16 chromosomes undergoes mitosis. How many chromatids are present at metaphase?
सही उत्तर: क) 32
After S phase each of the 16 chromosomes has two sister chromatids, so metaphase shows 16 x 2 = 32 chromatids.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cells that exit the cell cycle and stop dividing, such as mature nerve cells, are said to be in the:
सही उत्तर: ख) G0 (quiescent) phase
Cells that do not divide further leave G1 and enter an inactive G0 or quiescent stage while remaining metabolically active.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In plant cells, cytokinesis takes place mainly by:
सही उत्तर: ग) Cell plate formation
Plant cells have a rigid wall, so a cell plate forms in the centre and grows outward to divide the cytoplasm; animal cells use a furrow.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Terminalisation of chiasmata is completed during which sub-stage of prophase I?
सही उत्तर: ग) Diakinesis
Diakinesis, the last stage of prophase I, is marked by terminalisation of chiasmata, disappearance of the nucleolus and breakdown of the nuclear envelope.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During which phase of mitosis do the chromosomes line up at the equatorial plate?
सही उत्तर: घ) Metaphase
At metaphase the chromosomes, attached to spindle fibres at their kinetochores, align on the metaphase (equatorial) plate.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A chromosome whose centromere is slightly away from the middle, giving one shorter and one longer arm, is called:
सही उत्तर: घ) Submetacentric
In a submetacentric chromosome the centromere is near the middle, so the two arms are slightly unequal (L-shaped at anaphase).
💬 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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