SPSC 25 YEARS PAST PAPERS 2001 TO 2026
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کے تحفظ کے لئے وائلڈ لائف مینجمنٹ ضروری ہے؟ _____
- Forest animals
- Forest soils
- Both A and B
- None of these
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Explanation
Wildlife management helps in the conservation of forest animals by protecting their natural habitats.It also preserves forest soils by maintaining ecological balance and preventing deforestation.
نہر آبپاشی نے ______ میں اضافہ کیا ہے؟
- Soil salinity
- Water logging
- Both A and B
- None of these
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Explanation
Canal irrigation leads to waterlogging due to excessive water seepage, making soil oversaturated.It also increases soil salinity, as water evaporation leaves behind salt deposits, reducing soil fertility.
جینیاتی انجینئرنگ کے تیار کردہ پودوں کو ______ کہا جاتا ہے؟
- Genetic clones
- Recombinants
- Transgenic plants
- None of these
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Explanation
Transgenic plants have foreign genes inserted into their DNA through genetic engineering.These plants are modified for disease resistance, higher yield, or improved nutritional content.
چیونٹی سماجی کیڑے مکوڑے ہیں کیونکہ ______؟
- They share food
- They live in colonies
- They live in forests
- None of these
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Explanation
Ants are social insects because they live in organized colonies with a division of labor.They exhibit cooperative behavior, including food sharing, nest building, and defense.
ٹماٹر میں پودوں کے پرزوں پر جامنی رنگ کا رنگ کس عنصر کی کمی کی وجہ سے ہے؟
- Calcium
- Nitrogen
- Phosphorus
- None of these
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Explanation
Phosphorus deficiency causes purple or reddish coloration in tomato plants due to anthocyanin pigment accumulation.It also leads to stunted growth and delayed maturity in plants.
کولچین مائٹوسس کے کس مرحلے کو روکتا ہے؟
- Spindle formation
- Prophase
- Telophase
- None of these
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Explanation
Colchicine disrupts spindle fiber formation.It preventing chromosome separation during cell division.It arrests the cell cycle at metaphase.This leading to polyploidy in plants.
ایک پولیپپٹائڈ کی ترکیب کے لئے ذمہ دار جین کی فنکشنل یونٹ ______ کہلاتا ہے؟
- Gene
- Recon
- Cistron
- None of these
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Explanation
A cistron is a functional unit of a gene that codes for a single polypeptide chain.It is essentially a coding segment of DNA or RNA that defines a specific protein structure.
مییوسس پروفیز ون کو کتنے کے سب ڈویژنس میں تقسیم کیا گیا ہے؟
- Two subdivisions
- Five subdivisions
- Three subdivisions
- None of these
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Explanation
Prophase I of Meiosis is divided into five stages: Leptotene, Zygotene, Pachytene, Diplotene, and Diakinesis.These subdivisions are crucial for genetic recombination and chromosome pairing.
- Poaceae
- Asteraceae
- Capitulum head
- None of these
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Explanation
Poaceae and Asteraceae are plant families.While Capitulum head is an inflorescence type.Since the first two are taxonomic groups and the third is a floral structure. Capitulum head is the odd one out.
میگاسپور مدر سیل ڈویژن سے گزرتا ہے جو _____ ہے؟
- Nuclear Division
- Meiotic
- Mitotic Division
- None of these
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Explanation
The megaspore mother cell undergoes meiosis to form four haploid megaspores.This process is essential for the development of the female gametophyte in plants.
