PPSC AGRICULTURE OFFICER PAST PAPER HELD ON 19-03-2023
Agriculture Officer Paper held on 19/3/2023.
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
بولٹنگ سے مراد کس فصل میں پھولوں کے جھرمٹ کا ظہور ہے؟
- Sugarcaner
- Sugarbeet
- Potato
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Bolting is the rapid growth of the flowering stem (inflorescence).
- Observed in sugarbeet, where the plant shifts from vegetative to reproductive stage.
- Causes reduced root yield and sugar content.
- Triggered by long day conditions or stress.
- Important to manage for better crop harvest.
Last verified on 12-02-2026
کسٹر بین کس قسم کی فصل ہے؟
- Cereal crop
- Pulse crop
- Oil seed crop
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Castor bean (Ricinus communis) is grown for oil extraction from seeds.
- The oil, called castor oil, has industrial and medicinal uses.
- It is classified as an oilseed crop.
- Grows in tropical and subtropical regions.
- Seeds contain ricin, a toxic compound, so processing is important.
Last verified on 12-02-2026
بریڈ ویٹ کس قسم کا پودا ہے؟
- Diploid
- Tetraploid
- Hexaploid
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Bread wheat (Triticum aestivum) is the most widely grown wheat worldwide.
- It has six sets of chromosomes (hexaploid, 2n = 6x = 42).
- Hexaploid nature gives it genetic diversity and high yield potential.
- Originated from natural hybridization between tetraploid wheat and wild grass.
- Used mainly for bread, flour, and bakery products.
Last verified on 12-02-2026
جڑ والی فصل کی مثال کون سی ہے؟
- Potato
- Ground nut
- Carrot
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Root crops are plants where the edible part grows underground.
- Carrot is a taproot crop, rich in nutrients like beta-carotene.
- Root crops are important for food and nutrition.
Last verified on 12-02-2026
گرین ریولوشن سے کیا مراد ہے؟
- Dwarf varieties
- Dwarf high fertilizer responsive varieties
- Fertilizer responsive varieties
- All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The Green Revolution (1960s–70s) introduced dwarf, high-yielding crop varieties.
- These varieties respond well to fertilizers and irrigation, increasing production.
- Mainly applied to wheat and rice in developing countries.
- Helped reduce hunger and improve food security globally.
- Introduced by scientists like Norman Borlaug.
Last verified on 12-02-2026
کے ایس-282 اور کے ایس-133 کیا ______ کی کاشت ہیں؟
- Wheat
- Coarse Rice
- Maize
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- KS-282 and KS-133 are high-yielding coarse rice cultivars.
- Developed for better grain quality and disease resistance.
- Coarse rice is widely grown in tropical and subtropical regions.
- These cultivars help improve food security and farmer income.
- Suitable for both irrigated and rainfed conditions.
Last verified on 12-02-2026
فوٹو ریسپریشن زیادہ تر کس قسم کے پودوں میں دیکھی جاتی ہے؟
- CAM plants
- C4 plants
- C3 plants
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Photorespiration is a process where Rubisco enzyme reacts with O₂ instead of CO₂, reducing photosynthetic efficiency.
- It occurs mainly in C3 plants like wheat, rice, and soybean.
- Leads to loss of energy and fixed carbon in plants.
- More common in hot and dry conditions.
Last verified on 12-02-2026
پودے مٹی سے نائٹروجن کس شکل میں لیتے ہیں؟
- Nitrate
- Ammonium
- Both A and B
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Plants need nitrogen for protein and chlorophyll synthesis.
- Nitrogen in soil is absorbed mainly as nitrate (NO₃⁻) and ammonium (NH₄⁺) ions.
- Soil bacteria help convert organic nitrogen into these forms.
- Essential for healthy plant growth and higher crop yield.
- Nitrogen deficiency causes yellowing of leaves.
Last verified on 12-02-2026
بارن یارڈ گراس کس فصل کا اہم جڑی بوٹی والا مسئلہ ہے؟
- Rice
- Wheat
- Sunflower
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Barnyard grass (Echinochloa spp.) is a common weed in rice fields.
- It competes with rice plants for nutrients, water, and sunlight.
- Reduces yield and affects crop quality.
- Common in flooded and irrigated rice paddies.
- Effective weed management is crucial for rice cultivation.
Last verified on 12-02-2026
سی فور پودوں میں سب سے پہلی کاربوکسیلیشن اینزائم کون سی ہے؟
- Carbon anhydrase
- Phosphenol pyruvate carboxylase
- Rubisco activase
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- C4 plants (e.g., maize, sugarcane) perform C4 photosynthesis to minimize photorespiration.
- The first enzyme to fix CO₂ is PEP carboxylase, forming a 4-carbon compound.
- This is different from C3 plants, where Rubisco fixes CO₂ first.
- PEP carboxylase has high affinity for CO₂ and does not react with O₂.
- Important for efficient photosynthesis in hot and dry climates.
Last verified on 12-02-2026
