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

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All MCQs and revision practice

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471. Plants that have dead aerial parts but living roots are called _____?

ایسے پودے جن کے اوپر کے حصے مردہ ہوں لیکن جڑیں زندہ رہیں، انہیں کیا کہتے ہیں؟

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Answer: Perennial herbaceous

Explanation Plants are classified by their life cycle and parts that survive year to year. Some plants have above-ground parts that die each year, but their roots survive to grow again. These are called perennial herbaceous plants . Last verified on 23-01-2026

472. Witches’ broom disease is caused by _____?

وِچز بروم بیماری کس کی وجہ سے ہوتی ہے؟

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Answer: Virus

Explanation Witches’ broom disease affects plants, causing abnormal clustering of branches like a broom. It is caused by a virus that disrupts normal growth patterns. Additional information : Commonly affects cacao, citrus, and some ornamental plants . Symptoms: Dense, bushy growth, stunted leaves, reduced fruit yield . Last verified on 19-01-2026

473. Khapra beetle is the pest of ______?

کھپرا بیٹل کس فصل کا کیڑا ہے؟

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Answer: All of these

Explanation The Khapra beetle (Trogoderma granarium) is a serious pest of stored grains. It causing damage to cereals like rice, wheat, barley, and sorghum. It is highly destructive and difficult to control. Additional information : Khapra beetle prefers dry, stored grains and can survive long without food. Control methods include fumigation, proper storage, and cleaning silos. Last verified on 11-02-2026

474. Science of classification is called?

درجہ بندی کی سائنس ____ کہلاتی ہے؟

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Answer: Taxonomy

Explanation Taxonomy is the science of classifying and naming organisms. Helps organize plants, animals, and microorganisms into groups. Based on shared characteristics, genetics, and evolutionary relationships. Developed initially by Carl Linnaeus in the 18th century. Last verified on 06-02-2026

475. Covering the soil to reduce water loss helps to _____?

مٹی کو ڈھانپنے سے پانی کے نقصان کو کم کرنے میں مدد ملتی ہے تاکہ کیا حاصل ہو؟

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Answer: Minimize evaporation

Explanation Covering the soil , also called mulching , helps to minimize evaporation . It conserves soil moisture, improves crop growth, and reduces water stress. Commonly used in orchards, vegetable gardens, and row crops. Last verified on 25-01-2026

476. Male and female parts on different flowers is called _____?

مردانہ اور زنانہ عضو الگ الگ پھولوں پر موجود ہوں تو اسے کیا کہتے ہیں؟

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Answer: Dioecious

Explanation Dioecious plants have male and female reproductive organs on separate flowers. Each plant is either male (produces pollen) or female (produces ovules). Ensures cross-pollination and genetic diversity. Last verified on 03-02-2026

477. A group of plants sharing the same characteristics and environment is called _____?

ایک گروہ پودوں کا جو ایک جیسی خصوصیات اور ماحول رکھتا ہو، اسے کیا کہتے ہیں؟

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Answer: Plant Species

Explanation Plants are classified based on shared characteristics and natural environment. A plant species is the basic unit of classification where plants can reproduce among themselves. Additional information : A species is capable of natural reproduction within its group. Example: Triticum aestivum (common wheat) is a plant species. Last verified on 22-01-2026

478. Which of the following insects is friendly for an organic farmer?

مندرجہ ذیل میں سے کون سا کیڑا نامیاتی کاشتکار کے لیے مفید ہے؟

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Answer: Ladybird beetle

Explanation Ladybird beetle (Coccinellidae) → feeds on aphids, mites, and small soft-bodied insects. Organic farmers rely on natural predators to reduce pest damage. Last verified on 11-02-2026

479. Urea fertilizer contains ______% nitrogen.

یوریا کھاد میں ______% نائٹروجن ہوتی ہے۔

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Answer: 46%

Explanation Urea fertilizer contains 46% nitrogen (N) . Urea is a white crystalline solid . It is widely used as a fertilizer and animal feed additive. Last verified on 31-01-2026

480. Laggards are at which rank to adopt innovation?

لگارڈس کس نمبر پر جدت اپنانے میں آتے ہیں؟

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Answer: Last 16%

Explanation Laggards are the last group to adopt new innovations. They are generally skeptical or resistant to change. Represent approximately 16% of the population in the diffusion of innovations model. Last verified on 30-01-2026

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