All MCQs - Agriculture Officer Past Papers and Syllabus Practice | PakExamPoint

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71. Swollen underground stem; an organ of food storage and propagation is called ______?

نیچے زمین میں پھولنے والا پھیلا ہوا تنہ جو خوراک محفوظ کرنے اور افزائش کے لیے ہو، اسے کیا کہتے ہیں؟

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Answer: Tuber

Explanation Some plants develop swollen underground stems to store food and ensure asexual propagation. These structures are known as tubers . It help the plant survive unfavorable conditions. Additional information : Potato → most common tuber crop Yam → tropical tuber crop Last verified on 11-02-2026

72. Drip irrigation method is suitable for _____?

ڈرِپ آبپاشی کا طریقہ کس علاقے کے لیے موزوں ہے؟

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Answer: Low rainfall regions

Explanation Drip irrigation supplies water directly to plant roots. It minimizes water loss through evaporation and runoff . Additional information : Drip irrigation reduces weed growth. It is ideal for orchards, vegetables, and cash crops . Last verified on 25-01-2026

73. Cotton is which type of resistant crop?

روئی کس قسم کی مزاحم فصل ہے؟

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Answer: Drought resistant

Explanation Cotton is a crop that can tolerate low water conditions, making it drought resistant . It is mainly grown in areas with moderate rainfall and well-drained soil . Additional information : Salt-resistant crops include Barley and Sugar beet. Cold-resistant crops include Wheat and Barley . Last verified on 30-01-2026

74. Loss of internal water of plant in the form of vapours from aerial parts of plants is called?

پودوں کے فضائی حصوں سے بخارات کی صورت میں پودوں کے اندرونی پانی کے ضائع ہونے کو ____ کہتے ہیں؟

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Answer: Transpiration

Explanation Transpiration is the process by which plants lose water in the form of vapor from leaves, stems, and flowers. It helps in cooling the plant, nutrient transport, and maintaining water balance. Additional information : Evaporation : Water loss from soil or water surfaces Respiration : Energy release by breaking down sugars Photosynthesis : Production of food using sunlight, CO₂, and water Last verified on 27-01-2026

75. The group of pesticides used to stop the reproduction of insects is called _____?

وہ زرعی زہریں جو کیڑوں کی نسل کشی یا تولید روکنے کے لیے استعمال ہوتی ہیں، کیا کہلاتی ہیں؟

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Answer: Sterilants

Explanation Sterilants are pesticides that inhibit reproduction in insects. They prevent pests from laying fertile eggs , reducing future populations. Additional information : Larvicides : Kill larvae Ovicides : Kill eggs Last verified on 27-01-2026

76. In honeybees, the queen and worker bees are _____?

شہد کی مکھیوں میں، رانی اور کارکن مکھی ______ ہیں؟

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Answer: Diploid

Explanation Honeybees have a unique sex-determination system called haplodiploidy . Queen and worker bees develop from fertilized eggs, making them diploid . Additional information : Drones (male bees) develop from unfertilized eggs and are haploid . This system helps maintain colony structure and division of labor . Last verified on 22-01-2026

77. Which of the following gases is commonly used as a refrigerant in domestic refrigerators for cooling?

ٹھنڈک کے لئے گھریلو ریفریجریٹرز میں عام طور پر مندرجہ ذیل میں سے کون سی گیس کو ریفریجریٹ کے طور پر استعمال کیا جاتا ہے؟

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Answer: Freon/ammonia

Explanation Refrigerants are gases used in refrigerators to absorb heat and provide cooling. Freon (CFCs) and ammonia are commonly used in domestic and commercial refrigeration . They evaporate at low temperatures, absorbing heat from the fridge interior . Last verified on 03-02-2026

78. Agricultural Extension Education is _____?

زرعی توسیع کی تعلیم کس نوعیت کی تعلیم ہے؟

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Answer: Non-formal education

Explanation Agricultural Extension Education provides practical knowledge and skills to farmers outside the formal classroom system . Focuses on improving farming practices, crop yield, pest management , and adoption of technology. Uses workshops, field demonstrations, farm visits , and radio/TV programs. Last verified on 31-01-2026

79. In the present scenario of Pakistan, agriculture can be sustained with _____?

فی ہیکٹر خالص منافع کس چیز کی پیمائش ہے؟

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Answer: Modern techniques and irrigation

Explanation Modern agriculture in Pakistan relies on advanced techniques and irrigation systems. Traditional or rain-fed methods alone cannot meet food demand. Efficient water use, mechanization, and high-yield crops are essential for sustainability. Last verified on 03-02-2026

80. Till 1940, pesticides were mainly obtained from plants and _______?

سن 1940 تک زیادہ تر پیسٹی سائیڈز پودوں اور ______ سے حاصل کیے جاتے تھے؟

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Answer: Minerals

Explanation Before 1940 , most pesticides were natural origin. They were mainly derived from plants and minerals . Examples include sulfur and arsenic compounds . Synthetic organic pesticides became common after 1940 . Early pest control relied on natural substances. Last verified on 04-02-2026

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