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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An interaction in which one species benefits and the other is neither harmed nor benefited is called:
सही उत्तर: ग) Commensalism
In commensalism one partner gains (e.g. an orchid growing on a mango branch) while the other is unaffected.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Immunity obtained by injecting ready-made antibodies, such as anti-tetanus serum, is called:
सही उत्तर: घ) Passive immunity
When preformed antibodies are given directly, protection is quick but short-lived; this is passive immunity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the human testis, testosterone is secreted by the:
सही उत्तर: क) Leydig (interstitial) cells
Leydig cells in the spaces between seminiferous tubules secrete androgens such as testosterone; Sertoli cells nourish developing sperms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Glucagon is secreted by which cells of the islets of Langerhans?
सही उत्तर: ख) Alpha cells
Alpha cells secrete glucagon, which raises blood glucose; beta cells secrete insulin and delta cells somatostatin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which vitamin is required for the synthesis of clotting factors such as prothrombin?
सही उत्तर: ग) Vitamin K
Vitamin K is needed by the liver to make prothrombin and other clotting factors; its deficiency delays blood clotting.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The average life span of human red blood cells is about:
सही उत्तर: ख) 120 days
Human RBCs survive about 120 days, after which they are destroyed mainly in the spleen ('graveyard of RBCs').
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Erythropoietin, the hormone that stimulates formation of red blood cells, is secreted mainly by the:
सही उत्तर: क) Kidneys
The juxtaglomerular cells of the kidney release erythropoietin when oxygen is low, stimulating RBC formation in bone marrow.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The tidal volume of a normal healthy adult at rest is approximately:
सही उत्तर: क) 500 mL
Tidal volume, the air inspired or expired in a normal breath, is about 500 mL (6000-8000 mL per minute).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The normal blood pressure of a healthy adult human (systolic/diastolic) is about:
सही उत्तर: ग) 120/80 mm Hg
Normal systolic (pumping) pressure is about 120 mm Hg and diastolic (resting) pressure about 80 mm Hg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which part of the nephron is impermeable to water but actively transports NaCl out?
सही उत्तर: ग) Ascending limb of loop of Henle
The ascending limb pumps out salts but does not let water follow, so the filtrate becomes dilute and the medulla becomes hypertonic.
💬 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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