जीव विज्ञान – Zoology – Zoology MCQ

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

101. A researcher is studying a newly discovered amphibian species that exhibits remarkable adaptations for life underground. Which of the following characteristics would be most indicative of this animal's lifestyle?

     कA. Large, laterally flattened body shape for efficient swimming. खB. Highly developed eyes with excellent vision in dim light. गC. Reduced external respiratory organs and a slippery, mucus-covered skin. घD. Brightly colored scales for attracting mates.
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

102. The structure of a neuron is crucial for its function. Which part of a neuron is primarily responsible for transmitting electrical signals over long distances?

     कA. The dendrites, which receive signals from other neurons. खB. The axon, a long, slender projection that conducts impulses away from the cell body. गC. The synapse, the junction between two neurons. घD. The myelin sheath, which insulates the axon.
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

103. The process of muscle contraction involves a sliding filament mechanism. Which protein filaments are directly responsible for this sliding action?

     कA. Keratin and collagen. खB. Actin and myosin. गC. Tubulin and tropomyosin. घD. Chitin and sclerin.
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

104. Which of the following is a characteristic feature of amphibians relating to their cutaneous respiration?

     कConstant reliance on gills throughout life खExtensive capillaries near the skin surface allowing gas exchange गComplete absence of respiratory system besides gills घSymbiotic relationship with algae for oxygen production
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

105. Which of the following structures is responsible for storing fat in adipose tissue?

     कSmooth Muscle Cells खFibroblasts गAdipocytes घOsteoblasts
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

106. Which of the following statements accurately describes the function of the myelin sheath surrounding nerve fibers?

     कIt increases the speed of nerve impulse transmission खIt provides structural support to the neuron गIt primarily stores neurotransmitters घIt facilitates nutrient uptake by the neuron
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

107. The process of erythropoiesis, i.e., red blood cell formation, is primarily stimulated by which hormone?

     कInsulin खAdrenaline गErythropoietin घThyroxine
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

108. Which of the following ions plays a crucial role in nerve impulse transmission across neuronal membranes?

     कSodium (Na+) खCalcium (Ca++) गPotassium (K+) घChloride (Cl-)
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

109. Which of the following describes the primary function of phagocytes (e.g., macrophages) within the immune system?

     कProducing antibodies खDigesting pathogens and cellular debris गTransporting oxygen throughout the body घRegulating hormone secretion
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

110. The contractile ring formed by actin and myosin filaments during cell division is responsible for which key event?

     कDNA replication खChromosome condensation गCellular segmentation घCytokinesis
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।