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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Bone-forming cells that secrete the bone matrix are called:
सही उत्तर: ग) Osteoblasts
Osteoblasts lay down bone matrix; osteoclasts resorb bone and chondrocytes are cartilage cells.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Intercalated discs, which allow cells to contract as a unit, are a distinguishing feature of:
सही उत्तर: क) Cardiac muscle
Intercalated discs are specialised junctions between cardiac muscle fibres that permit rapid spread of impulses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a cartilaginous fish (class Chondrichthyes)?
सही उत्तर: घ) Scoliodon (dogfish)
Scoliodon has a cartilaginous endoskeleton and placoid scales; rohu, catla and sea horse are bony fishes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Hollow, air-filled (pneumatic) long bones are a characteristic feature of:
सही उत्तर: ख) Birds
Birds have pneumatic bones connected with air sacs, which lighten the body for flight.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following animals has a closed circulatory system?
सही उत्तर: ग) Earthworm
In the earthworm blood flows within vessels throughout, so the system is closed; arthropods and most molluscs have open systems.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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True metameric segmentation of the body first appears in which phylum?
सही उत्तर: क) Annelida
Annelids are the first animals to show true metamerism, the body being divided into similar segments (metameres).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Animals that are triploblastic and bilaterally symmetrical but have no body cavity (acoelomate) belong to:
सही उत्तर: ग) Platyhelminthes
Flatworms are triploblastic, bilaterally symmetrical and acoelomate; the space between body wall and gut is filled with mesenchyme (parenchyma).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the earthworm Pheretima, the clitellum covers which segments?
सही उत्तर: घ) 14th to 16th
The clitellum, a glandular band that forms the cocoon, covers segments 14 to 16 in Pheretima.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The tubular heart of a cockroach consists of how many funnel-shaped chambers?
सही उत्तर: ख) 13
The cockroach heart is an elongated dorsal tube with 13 funnel-shaped chambers bearing ostia on each side.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following mammals lays eggs?
सही उत्तर: क) Duck-billed platypus
The platypus (Ornithorhynchus) is a monotreme, an egg-laying (oviparous) mammal.
💬 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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