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

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All MCQs and revision practice

Study All through multiple-choice questions in Agriculture Officer Past Papers and Syllabus. This subtopic contains 749 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

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261. Biotechnology refers to ______?

بایوٹیکنالوجی سے کیا مراد ہے؟

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Answer: All of these

Explanation Manipulation of genes is part of genetic engineering , a branch of biotechnology. Cheese making uses microbes to ferment milk , which is an example of traditional biotechnology. Manipulation of biological systems refers to modern biotechnology applications in medicine, agriculture, and industry . Last verified on 11-02-2026

262. Irreversible change, quantitative and qualitative, in fruit is called _____?

پھل میں ناقابلِ واپسی، مقداری اور کیفیتی تبدیلی کو کس کے نام سے جانا جاتا ہے؟

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Answer: Development

Explanation Development in fruits refers to irreversible changes in size, structure, and quality. It includes both quantitative (size, weight) and qualitative (taste, color, texture) changes. Essential for fruit to reach marketable and edible state . Last verified on 03-02-2026

263. Powdery mildew is caused by ______?

پاؤڈر پھپھوندی کس کی وجہ سے ہوتا ہے؟

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Answer: Fungus

Explanation Powdery mildew is a common plant disease caused by fungi . Appears as white powdery spots on leaves, stems, and buds . Affects growth, yield, and quality of crops. Additional information : Fungal spores spread through air, water, and tools. Commonly affects cereals, vegetables, and ornamental plants. Last verified on 30-01-2026

264. Puddling in rice fields is done to _____?

چاول کے کھیتوں میں پڈنلگ کس مقصد کے لیے کیا جاتا ہے؟

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Answer: Avoid deep percolation of water

Explanation Puddling is the process of plowing rice fields under standing water to create a soft, muddy layer . It helps to reduce deep water percolation, keeping water near the root zone for better crop growth. Additional information : Puddling also breaks soil clods and improves seedbed for transplanting rice seedlings efficiently . Last verified on 27-01-2026

265. Hydrogen bonding is found in ______?

ہائیڈروجن بانڈنگ کہاں پائی جاتی ہے؟

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Answer: All of these

Explanation Hydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms like O, N, or F. Present in water (H₂O), ammonia (NH₃), and hydrogen fluoride (HF). Responsible for high boiling points , surface tension, and solubility. Last verified on 04-02-2026

266. Seeds stored in a store need _____?

گودام میں ذخیرہ کیے گئے بیجوں کے لیے کس چیز کی ضرورت ہوتی ہے؟

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Answer: Fumigation

Explanation Fumigation protects stored seeds from insects, pests, and fungal infections. Ensures seed viability and quality during storage. Common fumigants include phosphine and methyl bromide . Last verified on 31-01-2026

267. The study of vertical movement of water in soil was conducted by ____?

مٹی میں پانی کی عمودی حرکت کا مطالعہ کس نے کیا؟

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Answer: Henry Darcy

Explanation The vertical movement of water in soil is called capillary rise or soil water movement . The first scientific study on this was conducted by Henry Darcy in the mid- 19th century. Darcy’s work led to the Darcy’s Law , a fundamental principle in hydrology and soil physics. Additional information : Darcy’s Law: Q = K × A × (Δh / L) (Flow rate formula through soil). Last verified on 22-01-2026

268. On what date world population day is observed?

آبادی کا عالمی دن کس تاریخ کو منایا جاتا ہے؟

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Answer: July 11

Explanation First World population day was celebrated in 1987 . World population day is observed on July 11. Additional information : Theme 2024 : Leave no one behind, count everyone Theme 2025 : Empowering young people to create the families they want in a fair and hopeful world. Last verified on 01-02-2026

269. Use of traps for insects is a method of ____?

کیڑوں کے لیے جال یا ٹریپس کا استعمال کس طریقہ کار کے تحت آتا ہے؟

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Answer: Mechanical control

Explanation Using traps for insects is a mechanical method of pest control. It involves physically capturing or killing pests without chemicals. Additional information : Chemical control : Use of pesticides. Biological control : Use of natural predators or parasites. Examples of traps : Sticky traps, pheromone traps, light traps. Last verified on 19-01-2026

270. In DNA, adenine always pair with ______?

ڈی این اے میں ایڈینین ہمیشہ کس کے ساتھ جوڑتا ہے؟

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Answer: Thymine

Explanation In DNA, adenine (A) always pairs with thymine (T). Pairing is via two hydrogen bonds. Ensures the double helix structure of DNA. Guanine (G) pairs with cytosine (C) via three hydrogen bonds. This base pairing rule is called Chargaff’s rule . Last verified on 06-02-2026

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