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

31. The presence of a notochord during embryonic development in Chordates is significant because it signifies:

    कA fully formed skeletal structure ready for locomotion. खThe initial formation of the vertebral column, establishing the body plan. गThe beginning of gill development in aquatic larvae. घDirect access to the circulatory system for nutrient distribution.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

32. The process of exocytosis, where vesicles fuse with the cell membrane to release their contents, is crucial for which cellular function?

    कCellular respiration and ATP production. खProtein synthesis within ribosomes. गTransport of lipids across the cell membrane. घSecretion of hormones and neurotransmitters.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

33. The primary source of testosterone within the male human testes is:

    कLeydig cells खSertoli cells गInterstitial cells घBasal cells
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

34. Long-distance running relies on the characteristics primarily found in which type of muscle fiber?

    कFast twitch fibers खSlow twitch fibers गSmooth muscles घCardiac muscles
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

35. Intercalated discs facilitate cell-to-cell communication primarily through:

    कDirect cytoplasmic connections खThe release of neurotransmitters at synapses गGap junctions allowing passage of ions and small molecules घFormation of tight junctions preventing paracellular transport
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

36. The clinical condition known as Kwashiorkor is primarily characterized by malnutrition resulting from a deficiency of:

    कProtein खFatty Acids गVitamin A घCalcium
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

37. The presence of a coelom in animals indicates which evolutionary characteristic? (a) A simple body plan with minimal tissue organization (b) The development of a true circulatory system (c) The evolution of greater internal complexity and organ systems (d) A dependence on external respiration for energy production

    क(a) A simple body plan with minimal tissue organization ख(b) The development of a true circulatory system ग(c) The evolution of greater internal complexity and organ systems घ(d) A dependence on external respiration for energy production
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

38. Which of the following correctly describes the role of interneurons in the nervous system? (a) They directly conduct impulses between muscles and sensory receptors. (b) They are specialized for rapid transmission across synapses. (c) They process and relay information between other neurons, sensory organs, or effectors. (d) They primarily transmit signals over long distances within the central nervous system.

    क(a) They directly conduct impulses between muscles and sensory receptors. ख(b) They are specialized for rapid transmission across synapses. ग(c) They process and relay information between other neurons, sensory organs, or effectors. घ(d) They primarily transmit signals over long distances within the central nervous system.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

39. The process of metamorphosis observed in amphibians like tadpoles primarily involves changes driven by: (a) Increased oxygen consumption (b) Hormonal regulation and cell differentiation (c) Direct genetic mutations affecting tissue type (d) The accumulation of metabolic waste products

    क(a) Increased oxygen consumption ख(b) Hormonal regulation and cell differentiation ग(c) Direct genetic mutations affecting tissue type घ(d) The accumulation of metabolic waste products
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

40. Which of the following statements best describes the phenomenon of ‘negative geotropy’? (a) Roots grow downwards due to gravity (b) Plant organs tend to move away from the force of gravity (c) Stems exhibit growth in response to gravitational stimulation (d) Seedlings exhibit uniform growth regardless of the orientation

    क(a) Roots grow downwards due to gravity ख(b) Plant organs tend to move away from the force of gravity ग(c) Stems exhibit growth in response to gravitational stimulation घ(d) Seedlings exhibit uniform growth regardless of the orientation
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।