जीव विज्ञान – Zoology – Zoology MCQ
जीव विज्ञान – Zoology – CEE प्रवेश
Zoology · Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · ४०८ प्रश्न
४०८ प्रश्न उपलब्ध। मोड छान्नुहोस्:
जीव विज्ञान – Zoology: 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 process of budding is observed in:
सही उत्तर: ख) B) Amoeba
Budding is a form of asexual reproduction where an outgrowth (bud) develops from the side of the parent organism, eventually detaching to become a new individual. Yeast exhibits budding prominently; Amoeba utilizes pseudopodia, Hydra uses multiple buds, and Planaria reproduces through fragmentation. Thus, yeast is correct.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following correctly describes the process of osmosis in animal cells?
सही उत्तर: ख) B) Movement of water from a region of low solute concentration to high solute concentration.
Osmosis is defined as the net movement of solvent (water in this case) from a region of low solute concentration to a region of high solute concentration through a semi-permeable membrane. Option A accurately describes this process; options B and C describe active transport or lack of movement respectively. Option D is incorrect as osmosis involves movement due to concentration differences.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The presence of a tail in humans during embryonic development indicates which evolutionary trait? (a) A direct descent from aquatic mammals (b) An ancestral condition reflecting early vertebrate development (c) Recent genetic mutations affecting limb formation (d) The influence of the Y chromosome on overall growth
सही उत्तर: ग) (c) Recent genetic mutations affecting limb formation
The tail (tailbone or coccyx) is a vestigial structure – a remnant of an organ that served a purpose in our ancestors. Its presence demonstrates a direct link to vertebrate development where tails were necessary for locomotion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the mechanism of action of insulin? (a) It stimulates muscle contraction. (b) It promotes cell division and uptake of glucose from the blood. (c) It increases heart rate and blood pressure. (d) It induces apoptosis (programmed cell death).
सही उत्तर: ख) (b) It promotes cell division and uptake of glucose from the blood.
Insulin’s primary role is to facilitate glucose uptake into cells, particularly muscle and liver cells. This involves stimulating cellular processes to allow glucose to enter the bloodstream. The other options describe entirely different physiological actions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of ‘synapsis’ in meiosis is primarily responsible for: (a) Segregation of homologous chromosomes (b) Formation of recombinant chromatids (c) Independent assortment of allelic genes (d) Replication of DNA molecules
सही उत्तर: ख) (b) Formation of recombinant chromatids
Synapsis is the pairing of homologous chromosomes during meiosis I. This close association allows for crossing over (recombination) – the exchange of genetic material – which leads to the formation of recombinant chromatids. The other options describe different events within meiosis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the function of cilia found in respiratory passages? (a) Facilitating speech production (b) Moving mucus and trapped particles upward towards the pharynx (c) Absorbing nutrients from inhaled air (d) Regulating body temperature
सही उत्तर: ख) (b) Moving mucus and trapped particles upward towards the pharynx
Cilia are tiny hair-like structures that beat rhythmically to propel mucus containing debris away from the lungs. This action is crucial for respiratory health. The other options relate to completely different functions of respiratory components.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The formation of a blood clot at the site of injury is primarily due to the action of which cell type? (a) Erythrocytes (b) Neutrophils (c) Thrombocytes (d) Lymphocytes
सही उत्तर: ग) (c) Thrombocytes
Thrombocytes (platelets) are key cells involved in hemostasis – the process of blood clot formation. Neutrophils and lymphocytes are types of white blood cells involved in immune responses but aren’t directly responsible for initiating clotting. Erythrocytes are red blood cells that carry oxygen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The residual volume of air remaining in the lungs after maximal expiration is known as: a) Tidal Volume b) Expiratory Reserve Volume c) Residual Volume d) Vital Capacity
सही उत्तर: ग) c) Residual Volume
The correct answer is (c) Residual Volume. This refers to the air that remains in the lungs even after a full exhalation. Options A, B and D relate to different phases of breathing but do not define residual volume.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Antidiuretic hormone (ADH) primarily increases water reabsorption in the: a) Arteries b) Kidneys c) Liver d) Brain
सही उत्तर: ख) b) Kidneys
The correct answer is (b) Kidneys. ADH acts on the collecting ducts of the nephron in the kidneys, increasing water reabsorption back into the bloodstream. Options A, C, and D are incorrect as they do not directly participate in this mechanism.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fertilization in mammals typically occurs in the: a) Small Intestine b) Uterus c) Fallopian Tube d) Cervix
सही उत्तर: ग) c) Fallopian Tube
The correct answer is (c) Fallopian Tube. Fertilization occurs within the ampulla of the fallopian tube, where sperm and egg are most likely to meet. Options A, B, and D represent other parts of the female reproductive system involved in supporting or protecting the embryo, but not the site of fertilization.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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