कृषि, पशु र वन विज्ञान प्रवेश
कृषि, पशु र वन विज्ञान प्रवेश
Agriculture, Veterinary & Forestry Entrance · २,४९३ प्रश्न
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि/वन 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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Which crop has the highest protein content in its seed?
सही उत्तर: घ) Soybean
Soybean seed contains about 40% protein, far higher than cereals, which usually contain about 7-13%. That is why soybean is a key protein source in food and feed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Jute fibre is obtained from the:
सही उत्तर: ग) stem (bast/phloem)
Jute is a bast fibre extracted from the stem after retting. Cotton is a seed fibre and coir comes from the coconut husk.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The correct sequence of seed classes in a seed multiplication chain is:
सही उत्तर: ख) Breeder seed → Foundation seed → Certified seed
Breeder seed is produced by the breeder, multiplied into foundation seed, and then into certified seed for farmers. Each step multiplies the quantity while keeping genetic purity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In plant breeding, removal of anthers from a bisexual flower before they shed pollen is called:
सही उत्तर: क) emasculation
Emasculation prevents self-pollination of the female parent. Bagging is then done to protect the emasculated flower from unwanted pollen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Hybrid vigour, the superiority of an F1 hybrid over its parents, is called:
सही उत्तर: घ) heterosis
Heterosis is the reason farmers buy fresh hybrid seed every season. Inbreeding depression is the opposite effect, a loss of vigour from repeated selfing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which crop is predominantly cross-pollinated?
सही उत्तर: ग) Maize
Maize has separate male (tassel) and female (silk) flowers, which favours cross-pollination. Wheat, rice and barley are mainly self-pollinated.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which plant hormone promotes ripening of fruits?
सही उत्तर: ख) Ethylene
Ethylene is a gaseous hormone that triggers ripening, which is why calcium carbide or ethephon is used for artificial ripening. Gibberellins are mainly known for stem elongation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a C4 plant?
सही उत्तर: क) Maize
Maize, sugarcane and sorghum are C4 plants with Kranz anatomy and efficient photosynthesis under high light and temperature. Wheat, rice and soybean are C3 plants.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The pink colour of active legume root nodules is due to:
सही उत्तर: घ) leghaemoglobin
Leghaemoglobin binds oxygen and protects the oxygen-sensitive enzyme nitrogenase inside the nodule. Nodules that are not fixing nitrogen are usually white or green.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Azolla is used as a biofertilizer in rice fields because it lives in symbiosis with the nitrogen-fixing cyanobacterium:
सही उत्तर: ग) Anabaena azollae
The water fern Azolla hosts Anabaena azollae in its leaf cavities, which fixes atmospheric nitrogen. Frankia fixes nitrogen with non-legume trees such as alder.
💬 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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