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۔
انتہائی ترمیم شدہ پودوں کی شوٹ جس میں ایک چھوٹا سا تنے گھنے موٹے مانسل پتے سے گھرا ہوا ہے؟
- Corm
- Bulb
- Tuber
- None of these
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Explanation
Bulb is an underground modified stem with a short stem surrounded by fleshy leaves that store food (e.g., Onion, Garlic).It helps plants survive unfavorable conditions and regrow when conditions improve.
سیل جھلی سے گھرا ہوا پروٹوپلازم کے ایک بڑے پیمانے پر _____ کہا جاتا ہے؟
- A bacterium
- A plant cell
- An animal cell
- None of these
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Explanation
Bacteria are single-celled organisms consisting of protoplasm enclosed by a cell membrane and a cell wall (except Mycoplasma).Unlike plant and animal cells, bacteria lack a nucleus and membrane-bound organelles.
- Series of biotic communities that appear in a bare area
- Series of physical changes that occur in an area
- Development of climax vegetation
- None of these
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Explanation
Succession is the natural process of gradual replacement of plant and animal communities in an ecosystem over time.It occurs in stages, leading to the establishment of a stable climax community.
گلوبل وارمنگ کے دوران ، کاربن ڈائی آکسائیڈ کی فیصد ______ ہے؟
- Remained unchanged
- Reduced in atmosphere
- Increased in atmosphere
- None of these
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Explanation
Global warming is caused by rising CO₂ levels due to fossil fuel burning, deforestation, and industrial activities.Higher CO₂ concentration traps heat in the atmosphere, leading to climate change.
- Science of agriculture
- Science of flowers
- Study or practice of growing flowers, fruits, vegetables, and gardening
- None of these
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Explanation
Horticulture deals with the cultivation, management, and study of fruits, vegetables, flowers, and ornamental plants.It is a branch of agriculture that focuses on improving plant growth, yield, and quality.
بیضوی میں جرگ ٹیوب کے داخلے کا سب سے عام طریقہ _____ کہا جاتا ہے؟
- Mesogamy
- Porogamy
- Chalazogamy
- None of these
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Explanation
Porogamy is the most common method where the pollen tube enters the ovule through the micropyle.This ensures direct fertilization by delivering male gametes to the embryo sac.
ہم آہنگی والے اسٹیمنز (فیوزڈ انتھٹرز) کس کنبے میں پائے جاتے ہیں؟
- Annonaceae
- Asteraceae
- Cucurbitaceae
- None of these
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Explanation
Syngenesious stamens (fused anthers) are characteristic of the Asteraceae (Compositae) family.In this type, anthers are united to form a tube around the style, aiding in pollen dispersal.
بیجوں کے انکرن کے لئے ضروری شرائط _____ ہیں؟
- Moisture, O₂, and suitable temperature
- CO₂, light, and O₂
- Light, O₂, and suitable temperature
- None of these
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Explanation
Moisture is essential to activate enzymes and initiate metabolic processes in the seed.Oxygen is required for respiration, and a suitable temperature ensures proper enzymatic activity for growth.
شمسی توانائی کی زیادہ سے زیادہ تعی .ن ______ کے ذریعہ کی جاتی ہے؟
- Green plants
- Fungi
- Man
- None of these
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Explanation
Green plants fix solar energy through photosynthesis.It converting sunlight into chemical energy.They use chlorophyll to absorb light and produce glucose, supporting the food chain.
کی عمر تلاش کرنے کے لئے ریڈیو کاربن ڈیٹنگ کا استعمال کیا جاتا ہے؟ _____
- Plants
- Rocks
- Fossils
- None of these
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Explanation
- Carbon dating is used to estimate the age of fossils.
- Those that are less than 60,000 years old.
- It is composed of organic materials like wood or leather.
