चिकित्सा शिक्षा आयोग (CEE) आयुर्वेद र होमियोप्याथी (BAMS) तयारी
चिकित्सा शिक्षा आयोग (CEE) – आयुर्वेद र होमियोप्याथी (BAMS)
BAMS Entrance · Medical Education Commission – CEE
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
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
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The presence of a large, dark-colored digestive gland in the crocodile’s body is primarily associated with which function? (A) Calcium absorption from the diet. (B) Detoxification of metabolic waste products, particularly urea. (C) Storage of glycogen for energy reserves. (D) Production of red blood cells.
सही उत्तर: ख) Detoxification of metabolic waste products, particularly urea.
Option (1) is correct; the liver in crocodiles acts as a major detoxification organ processing uric acid and other nitrogenous wastes. Options (A), (C) and (D) represent functions of different organs in the animal’s body.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the sensory receptors located within the cochlea of the inner ear is to detect vibrations and transduce them into neural signals. Which of the following statements best describes this process? (A) Detection of changes in blood pressure. (B) Conversion of sound waves into electrical impulses. (C) Monitoring balance and spatial orientation. (D) Regulation of body temperature.
सही उत्तर: ग) Monitoring balance and spatial orientation.
Option (2) is correct because the cochlea is specifically designed to detect vibrations – the basis of hearing. The other options are irrelevant or describe different bodily functions. Options (A), (C) and (D) represent inaccurate interpretations of the cochlea’s role.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The phenomenon of ‘etiolation’ in plants refers to: (a) A rapid increase in chlorophyll production due to high light intensity. (b) Abnormal growth characterized by elongated stems, pale leaves, and an upward gravitropic response seeking light. (c) The formation of adventitious roots from leaf bases. (d) The process of seed germination stimulated by ethylene hormone.
सही उत्तर: ख) Abnormal growth characterized by elongated stems, pale leaves, and an upward gravitropic response seeking light.
Etiolation is the desperate attempt of a seedling to reach light when deprived of it, resulting in elongated stems and pale leaves – option (a) describes photomorphogenesis; (c) relates to root development; (d) concerns germination hormones.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following botanical adaptations is primarily associated with drought tolerance in succulent plants like *Aloe*? (a) Large, broad leaves to maximize sunlight absorption. (b) Thick cuticles and reduced leaf surface area to minimize water loss. (c) Extensive root systems for rapid nutrient uptake. (d) High transpiration rates to cool the plant’s tissues.
सही उत्तर: ख) Thick cuticles and reduced leaf surface area to minimize water loss.
Succulents have evolved specialized features like thick cuticles and reduced leaf surfaces to drastically reduce water loss – option (a) promotes increased water loss; (c) is a general adaptation but not specifically related to drought tolerance; (d) would exacerbate the issue.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of ‘double fertilization’ in flowering plants, as observed in species like *Arabidopsis*, involves two sperm cells fusing with different cell types. What are the products of this unique event? (a) A diploid zygote and a triploid endosperm. (b) A diploid zygote and a haploid endosperm. (c) A triploid zygote and a diploid endosperm. (d) A tetraploid zygote and a haploid endosperm.
सही उत्तर: ख) A diploid zygote and a haploid endosperm.
Double fertilization is unique to angiosperms. One sperm fuses with the egg forming the diploid zygote, while the second sperm fuses with the central cell’s two polar nuclei, creating a triploid endosperm – options (b), (c) and (d) are incorrect as they describe different ploidy levels.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements best describes the concept of ‘homologous structures’ as defined by Charles Darwin? (a) Structures that have evolved from different ancestral origins to perform similar functions. (b) Structures that are identical in all species, reflecting a common ancestry. (c) Structures that share a common ancestry but may serve different functions. (d) Structures that arise de novo during development in different organisms.
सही उत्तर: ग) Structures that share a common ancestry but may serve different functions.
Homologous structures are key to Darwin's theory of evolution. They demonstrate shared ancestry despite potentially distinct current uses – options (a) and (d) describe convergent or developmental evolution respectively; (b) describes analogous structures.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the Casparian strip in the endodermis of plant roots is to: (a) Allow free passage of water and minerals into the xylem. (b) Regulate the movement of water and mineral ions into the vascular cylinder. (c) Facilitate photosynthesis within the root cells. (d) Provide structural support to the root cortex.
सही उत्तर: ख) Regulate the movement of water and mineral ions into the vascular cylinder.
The Casparian strip is a waxy band in the endodermis that blocks the apoplastic pathway, forcing water and minerals to enter the symplast before reaching the xylem. This provides precise control over what enters the vascular system – option (a) is incorrect because it describes unrestricted movement; (c) is wrong as photosynthesis doesn’t occur in roots.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following compounds exhibits resonance stabilization?
सही उत्तर: ग) SO₂
Carbon tetrachloride (CCl₄) shows resonance due to delocalization of electrons between the carbon and chlorine atoms. BF₃, SO₂, and NO₂ do not exhibit significant resonance stabilization because the central atom has an available octet or other destabilizing factors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The reaction between zinc and hydrochloric acid produces which gas?
सही उत्तर: घ) Nitrogen
The reaction of zinc (a metal) with hydrochloric acid (HCl) produces hydrogen gas. This is a classic redox reaction where zinc gets oxidized, and hydrogen ions get reduced. The other gases are produced in different chemical reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary reason for the different acidities of hydrochloric acid (HCl) and hydrofluoric acid (HF)?
सही उत्तर: ग) HCl is a non-polar molecule, while HF is polar
HF exhibits higher acidity because it forms a strong hydrogen bond with water molecules. This contributes to the greater dissociation of HF in solution compared to HCl, leading to a higher H⁺ concentration.
💬 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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