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 saliva of the leech contains hirudin, which:
सही उत्तर: ग) prevents coagulation of blood
Hirudin is an anticoagulant that keeps the sucked blood of the host from clotting.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The lateral appendages called parapodia, used for swimming, are found in:
सही उत्तर: क) Nereis
Nereis, a marine polychaete annelid, has paired parapodia on its segments for swimming.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Ascaris, the male can be distinguished from the female because the male:
सही उत्तर: ग) has a curved posterior end with penial spicules
Ascaris shows sexual dimorphism: the male is smaller and its tail is curved ventrally and bears two penial spicules.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The intermediate host in the life cycle of the liver fluke Fasciola hepatica is a:
सही उत्तर: क) freshwater snail
The miracidium larva of Fasciola develops in a freshwater snail (Lymnaea); sheep and cattle are the primary hosts.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Coral reefs are built mainly from the calcareous skeletons secreted by:
सही उत्तर: घ) polyps of cnidarians (Anthozoa)
Coral polyps (class Anthozoa of Cnidaria) secrete calcium carbonate skeletons that accumulate to form reefs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Physalia, the 'Portuguese man-of-war', belongs to the phylum:
सही उत्तर: ख) Cnidaria
Physalia is a colonial cnidarian (coelenterate) with a gas-filled float and stinging cnidocytes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In sponges, water leaves the body through the:
सही उत्तर: घ) osculum
Water enters through many small ostia, passes through the spongocoel and canals, and leaves through the large osculum.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The spicules forming the skeleton of the sponge Sycon are made of:
सही उत्तर: ग) calcium carbonate
Sycon belongs to class Calcarea, whose skeleton consists of calcareous (CaCO₃) spicules.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Archaeopteryx is regarded as a connecting link between:
सही उत्तर: ख) Reptiles and birds
Archaeopteryx had feathers and wings like birds, and teeth, claws and a long bony tail like reptiles. The lungfish is considered a link between fishes and amphibians.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a vestigial organ in humans?
सही उत्तर: क) Vermiform appendix
The vermiform appendix is a reduced remnant of the caecum used for cellulose digestion in herbivores. The pancreas is a fully functional gland.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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