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

1. The haemolymph of a cockroach appears clear or pale yellow because:

   कIt lacks plasma components खIt contains dissolved oxygen which scatters light गIt has a low concentration of red blood cells and proteins घIt is consistently chilled by the insect's thermoregulation
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

2. Which of the following best describes the basic structure of an antibody (immunoglobulin)?

   कA simple protein chain with no complex folding खA large, intricately folded glycoprotein composed of heavy and light chains गA lipid molecule that directly attacks foreign invaders घA polysaccharide used for cell wall construction
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

3. A researcher studying the circulatory system of a frog observes that the heart has three chambers – two atria and one ventricle. What does this anatomical feature indicate about the frog’s evolutionary history?

   कThe frog is a highly efficient oxygenator खThe frog is capable of sustained anaerobic activity गThe frog represents an intermediate stage in vertebrate evolution, transitioning from aquatic to terrestrial life घThe frog has evolved a specialized circulatory system for rapid heat dissipation
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

4. The rhythmic contraction of the heart in a frog is primarily controlled by:

   कA large cerebral cortex खIntrinsic cardiac muscle fibres and hormones गA complex neural network similar to mammals घExternal stimuli such as light and temperature
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

5. Which of the following features characterizes a cartilaginous fish? a) Bony skeleton and scales. b) Presence of an operculum and gills covered by bony plates. c) Cartilaginous skeleton and placoid scales. d) Paired fins with fleshy lobes.

   कBony skeleton and scales (1), Presence of an operculum and gills covered by bony plates (2), Cartilaginous skeleton and placoid scales (3), Paired fins with fleshy lobes (4) खBony skeleton and scales (2), Presence of an operculum and gills covered by bony plates (1), Cartilaginous skeleton and placoid scales (3), Paired fins with fleshy lobes (4) गPresence of an operculum and gills covered by bony plates (1), Bony skeleton and scales (2), Cartilaginous skeleton and placoid scales (3), Paired fins with fleshy lobes (4) घBony skeleton and scales (3), Presence of an operculum and gills covered by bony plates (2), Cartilaginous skeleton and placoid scales (1), Paired fins with fleshy lobes (4)
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

6. Which of the following structures is primarily responsible for maintaining constant body temperature in birds? a) Gizzard b) Crop c) Uric acid excretion d) Air sacs

   कGizzard (1), Crop (2), Uric acid excretion (3), Air sacs (4) खGizzard (2), Crop (1), Uric acid excretion (3), Air sacs (4) गCrop (1), Gizzard (2), Uric acid excretion (3), Air sacs (4) घAir sacs (1), Gizzard (2), Crop (3), Uric acid excretion (4)
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

7. The primary function of the contractile rings observed during mammalian oocyte maturation is: a) To facilitate the fusion of sperm and egg. b) To increase the size of the oocyte. c) To guide the oocyte towards the uterus. d) To initiate protein synthesis within the oocyte.

   कTo facilitate the fusion of sperm and egg (1), To increase the size of the oocyte (2), To guide the oocyte towards the uterus (3), To initiate protein synthesis within the oocyte (4) खTo facilitate the fusion of sperm and egg (1), To guide the oocyte towards the uterus (2), To increase the size of the oocyte (3), To initiate protein synthesis within the oocyte (4) गTo increase the size of the oocyte (1), To guide the oocyte towards the uterus (2), To facilitate the fusion of sperm and egg (3), To initiate protein synthesis within the oocyte (4) घTo guide the oocyte towards the uterus (1), To increase the size of the oocyte (2), To facilitate the fusion of sperm and egg (3), To initiate protein synthesis within the oocyte (4)
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

8. Which of the following statements accurately describes the process of peristalsis? a) It is a rapid, coordinated contraction of muscles involved in locomotion. b) It is a wave-like muscular contraction that propels food or other substances along a tubular organ. c) It is the diffusion of nutrients across cell membranes. d) It is the synthesis of proteins within muscle cells.

   कIt is a rapid, coordinated contraction of muscles involved in locomotion (1), It is a wave-like muscular contraction that propels food or other substances along a tubular organ (2), It is the diffusion of nutrients across cell membranes (3), It is the synthesis of proteins within muscle cells (4) खIt is a rapid, coordinated contraction of muscles involved in locomotion (1), It is the diffusion of nutrients across cell membranes (2), It is the synthesis of proteins within muscle cells (3), It is a wave-like muscular contraction that propels food or other substances along a tubular organ (4) गIt is a wave-like muscular contraction that propels food or other substances along a tubular organ (1), It is the diffusion of nutrients across cell membranes (2), It is the synthesis of proteins within muscle cells (3), It is a rapid, coordinated contraction of muscles involved in locomotion (4) घIt is the diffusion of nutrients across cell membranes (1), It is a wave-like muscular contraction that propels food or other substances along a tubular organ (2), It is the synthesis of proteins within muscle cells (3), It is a rapid, coordinated contraction of muscles involved in locomotion (4)
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

9. The larval stage of *Plasmodium falciparum*, the parasite causing malaria, develops within which organism? a) Grasshopper b) Mosquito c) Frog d) Earthworm

   कThe mosquito (1), Grasshopper (2), Frog (3), Earthworm (4) खThe mosquito (1), Grasshopper (3), Frog (2), Earthworm (4) गThe mosquito (2), Grasshopper (3), Frog (4), Earthworm (1) घThe mosquito (3), Grasshopper (2), Frog (1), Earthworm (4)
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

10. Which of the following processes contributes most significantly to the maintenance of a stable internal environment in mammals? (a) Active transport of nutrients into cells. (b) The process of transpiration in plants. (c) Homeostasis through feedback mechanisms involving hormones and regulatory systems. (d) The decomposition of organic matter by fungi.

    कActive transport of nutrients into cells. खThe process of transpiration in plants. गHomeostasis through feedback mechanisms involving hormones and regulatory systems. घThe decomposition of organic matter by fungi.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।