चिकित्सा शिक्षा आयोग (CEE) बीडीएस प्रवेश परीक्षा तयारी

MBBS/BDS/Nursing 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

751. Which of the following structures in the human eye is most directly responsible for focusing light onto the retina?

     कA) Cornea खB) Iris गC) Lens घD) Pupil
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

752. The symbiotic relationship between nitrogen-fixing bacteria and leguminous plants plays a crucial role in ecosystem nutrient cycling. What specific molecule is produced by these bacteria that benefits the plant?

     कA) Glucose, a primary source of energy for the plant. खB) Nitrate, a form of nitrogen essential for plant growth. गC) Cellulose, providing structural support to the plant cells. घD) Starch, a carbohydrate storage compound in the plant.
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     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

753. Which of the following correctly identifies the primary role of erythrocytes (red blood cells) within the circulatory system?

     कA) Transporting oxygen from lungs to tissues. खB) Filtering waste products from the blood. गC) Initiating blood clotting during injury. घD) Regulating blood pressure and heart rate.
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     टिप्पणी जाँचपछि मात्र देखिन्छ।

754. The process of metamorphosis observed in amphibians like tadpoles involves a drastic change in body form. Which of the following accurately represents the primary developmental stage during this transformation?

     कA) The larval stage, characterized by gills and a lateral tail. खB) The pupal stage, involving complete reorganization of tissues. गC) The adult stage, retaining features of both larval and juvenile forms. घD) The embryonic stage, where limbs and sensory organs develop.
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755. The phenomenon of 'geitonospory' is most closely associated with which plant group?

     कA. Orchids खB. Grasses गC. Ferns घD. Mosses
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756. Which of the following groups of plants is characterized by cones bearing seeds?

     कA. Ferns खB. Flowering Plants (Angiosperms) गC. Gymnosperms घD. Bryophytes
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     छलफल / प्रश्न उत्तरमा गल्ती छ

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     टिप्पणी जाँचपछि मात्र देखिन्छ।

757. Which of the following best describes the role of ‘bryophytes’ in ecological succession?

     कA. They are the dominant plants in climax communities due to their high photosynthetic rates. खB. They represent the first colonizers of barren environments, forming a basic soil layer. गC. They exclusively thrive in nutrient-rich soils and compete effectively with other plant species. घD. They require constant direct sunlight for survival and are rarely found at lower elevations.
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758. The process of secondary growth in plants leads to an increase in stem diameter. Which cell type primarily contributes to this thickening?

     कA. Palisade cells खB. Mesophyll cells गC. Vascular cambium घD. Epidermal cells
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759. A train leaves Kathmandu at 6:00 AM travelling at 80 km/h and another train leaves Pokhara at 7:00 AM travelling at 100 km/h. If the distance between Kathmandu and Pokhara is 140 km, at what time will they meet?

     क9:30 AM ख10:00 AM ग10:30 AM घ11:00 AM
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760. In bryophytes (mosses and liverworts), which phase of the life cycle is predominantly dominant?

     कSporophyte खGametophyte गCalmose घZoosporangium
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     टिप्पणी जाँचपछि मात्र देखिन्छ।