LECTURER ZOOLOGY PAST PAPERS AND SYLLABUS
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
انوفیلس مچھر کا لاروا پانی میں تیرتا ہے؟
- Vertically with head upwards
- Vertically with head downward
- Horizontally with tail exposed in air
- None of these
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Explanation
The Anopheles mosquito larva floats horizontally in water, with its tail exposed to the air for breathing through spiracles.This is different from Culex mosquito larvae, which hang vertically in water.
میرین پروٹوزینز کو تازہ مرضی _____ میں منتقل کیا گیا؟
- Enlarge
- No change
- Shrink
- None of these
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Explanation
Marine protozoans are adapted to a high-salinity environment. When transferred to freshwater, osmosis causes water to enter their cells, leading to swelling.Without proper osmoregulation, excessive water intake may eventually cause the protozoan to burst.
اینٹاموبا ہسٹولیٹیکا کا انفیکٹو مرحلہ ______ ہے؟
- Sporozoite
- Trophozoite
- Merozoite
- None of these
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Explanation
The trophozoite stage of Entamoeba histolytica is the active, feeding, and disease-causing stage found in the host’s intestines.However, the infective stage is actually the mature cyst.It is ingested through contaminated food or water and then transforms into trophozoites in the intestine.
پلازموڈیم کا انفیکشن مرحلہ ______ ہے؟
- Sporozoite
- Trophozoite
- Merozoite
- None of these
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Explanation
The sporozoite stage is the infectious form of Plasmodium, transmitted to humans through a mosquito bite.Sporozoites travel to the liver, where they develop into merozoites.
ورٹیربیٹ گونڈس میں جراثیم کے خلیات ______ کے ذریعہ تیار کیے جاتے ہیں؟
- Only meiosis
- Only mitosis
- Mitosis and Meiosis
- None of these
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Explanation
Germ cells first multiply through mitosis to increase their number.They then undergo meiosis to produce haploid gametes (sperm or eggs).
سینٹومیر کا کام _____ ہے؟
- Formation of RNA
- Duplication of chromosomes
- Movement of chromosomes
- None of these
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Explanation
The centromere is the region of a chromosome where spindle fibers attach during cell division.It ensures the proper movement and segregation of chromosomes during mitosis and meiosis.
سیل میں مائٹوکونڈریا کے عمل کو پہلے _______ کے ذریعہ بیان کیا گیا تھا؟
- Leeuwenhoek
- Altmann
- De Duve
- None of these
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Explanation
Richard Altmann first described mitochondria as "bioblasts" in 1890.He proposed that they were independent living entities within cells.
پروٹونیماتا باقیات ______ کے طور پر استعمال کی جاسکتی ہیں؟
- Alersaive
- Filtering agent
- Building stones
- None of these
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Explanation
Protonemata remains, especially from mosses like Sphagnum.They are used as filtering agents due to their high water retention capacity.They help in purifying water by trapping impurities and sediments.
مکھی کالونی کے ممبر ______ کے ذریعہ ایک دوسرے کو پہچانتے ہیں؟
- Touch
- Dance
- Smell
- None of these
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Explanation
Bees recognize colony members through pheromones, which are chemical signals.These pheromones help maintain hive organization and prevent intruders.
ٹڈی سبزی خوروں کا تنہائی ہوسکتا ہے۔ یہ ______ پر منحصر ہے؟
- Own variety
- Weather conditions
- Food condition
- None of these
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Explanation
Locusts shift between solitary and gregarious phases based on food availability.When food is scarce, they gather in swarms, triggering behavioral and physiological changes.
