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 specialized cells called collenchyma in plant stems contributes significantly to: a) Increased photosynthetic efficiency. b) Providing structural support and flexibility, enabling growth. c) Facilitating the movement of water and nutrients through the stem. d) Regulating transpiration rates.
सही उत्तर: ख) b) Providing structural support and flexibility, enabling growth.
Collenchyma cells are characterized by their uneven thickening with cellulose and pectin, providing flexible strength to plant stems – allowing for continued growth. This structural support is crucial. Photosynthesis efficiency, nutrient transport and transpiration regulation are not directly determined by collenchyma.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the function of CAM photosynthesis in plants like cacti? a) It occurs continuously throughout the day and night. b) It involves opening stomata during the day to maximize CO2 uptake. c) It utilizes an initial ‘crassulacean acid metabolism’ (CAM) pathway to fix carbon dioxide at night, reducing water loss during the day. d) It relies solely on C4 photosynthetic pathways for efficient carbon fixation.
सही उत्तर: घ) d) It relies solely on C4 photosynthetic pathways for efficient carbon fixation.
CAM photosynthesis is a specialized adaptation found in plants like cacti that allows them to thrive in arid environments. The CAM pathway fixes CO2 at night, minimizing water loss due to stomatal opening during the hotter parts of the day. The other options describe either continuous photosynthesis or reliance on C4 pathways – which are not central to CAM's function.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of converting inorganic compounds into organic compounds within plant cells is known as: a) Photosynthesis b) Respiration c) Translocation d) Osmosis
सही उत्तर: क) a) Photosynthesis
Photosynthesis is the fundamental process where plants convert inorganic compounds (like carbon dioxide and water) into organic compounds (glucose) using light energy. Respiration involves breaking down glucose to release energy, translocation moves substances within plant, and osmosis refers to the movement of water across a semipermeable membrane – therefore, ‘photosynthesis’ is the correct answer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a characteristic feature of amphibians relating to their cutaneous respiration?
सही उत्तर: ख) Extensive capillaries near the skin surface allowing gas exchange
Amphibians have numerous capillaries close to the skin’s surface, facilitating gas exchange directly between the atmosphere and their blood. This cutaneous respiration supplements gill breathing in many species.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following structures is responsible for storing fat in adipose tissue?
सही उत्तर: घ) Osteoblasts
Adipocytes (fat cells) are specialized cells designed to store triglycerides, which are molecules made of lipids and water. The other options represent different cell types involved in connective tissue or bone formation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the function of the myelin sheath surrounding nerve fibers?
सही उत्तर: क) It increases the speed of nerve impulse transmission
The myelin sheath, formed by glial cells (Schwann cells or oligodendrocytes), acts as an insulator around nerve fibers, dramatically increasing the speed at which electrical signals can travel. The other options describe different aspects of neuronal structure or function.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of erythropoiesis, i.e., red blood cell formation, is primarily stimulated by which hormone?
सही उत्तर: ग) Erythropoietin
Erythropoietin, produced by the kidneys, directly stimulates the bone marrow to produce more red blood cells in response to low oxygen levels. The other hormones have different metabolic roles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following ions plays a crucial role in nerve impulse transmission across neuronal membranes?
सही उत्तर: ग) Potassium (K+)
Potassium ions are essential for maintaining resting membrane potential and generating action potentials in neurons. The other options have different primary functions within the cell.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Free central placentation is typically found in which plant family?
सही उत्तर: ख) Fabaceae
Free central placentation (where floral parts are not fused to the ovary) is a characteristic feature of the Fabaceae (pea) family. The other options represent families with different types of placentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the F₂ generation of a trihybrid cross (AaBbCc × AaBbCc) with independent assortment and complete dominance, what is the expected phenotypic ratio for the trait 'B', assuming all possible phenotypes are expressed?
सही उत्तर: ख) 9:3:3:1
A trihybrid cross involving independent assortment results in a 9:3:3:1 phenotypic ratio. This pattern arises because each gene contributes independently to the observed phenotype.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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