Beneficial and Harmful Insects MCQs

Prepare for Beneficial and Harmful Insects MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

174 Solved Questions • 131 Mins Practice • Updated for 2026 Competitive Exams
MCQS
2026 Solved Edition · Updated October 2026 · Verified Editorial Standards

Welcome to the verified preparation module for Beneficial and Harmful Insects MCQs on McqsMind. This comprehensive set offers solved multiple-choice questions with answers, detailed explanations, and authentic past-paper style questions aligned with the latest syllabus of Agricultural Entomology (Agriculture).

100% Verified Answer Keys CSS, PMS, FPSC, PPSC, NTS Ready 2026/2027 Syllabus Guidelines

Direct Definition & Conceptual Scope

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Beneficial and Harmful Insects constitutes an essential examination topic within Agriculture, evaluating theoretical principles, historical context, and practical problem-solving applications. On MCQsMind, candidates practice verified past-paper solutions, conceptual breakdowns, and syllabus-aligned questions tailored for CSS, PMS, and competitive screening examinations.

Solved Questions

Practice with answers, explanations, and exam-focused revision notes.

174 MCQs Page 1

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Topic Notes: Beneficial and Harmful Insects

Quick Revision 3 min read 14 key points
Section 1 of 4

1 1. Beneficial Insects and Products

4 points
  • Fact Jan 2023
    Lac Insect (Laccifer lacca): This scale insect is the primary source of lac resin, a natural secretion used in varnishes, shellac, and electronics, harvested mainly from host trees like Ber and Palas.
  • Fact
    Silkworm (Bombyx mori): The larva produces a protective, thread-like casing known as a cocoon during the pupal stage, which is unwound to produce high-quality silk fiber.
  • Fact
    Honey Bee (Apis mellifera): Considered highly social (eusocial), they exhibit division of labor where the worker bee is a sterile female responsible for foraging, hive maintenance, and brood care.
  • Definition
    Pollinators: Insects like bees, hoverflies, and butterflies are vital for ecosystem services, facilitating cross-pollination in over 75% of global food crops, directly impacting agricultural yield.
Section 1 / 4
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1
Which family of flies is commonly referred to as 'humpbacked flies'?
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2
What is the scientific name of the insect commonly referred to as the lac insect?
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3
From which silkworm species is Shantung silk primarily obtained?
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4
Which biological agent is responsible for causing Sotto disease in silkworms?
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5
Which chemical compound is a known component of wasp venom?
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6
What is the common term for bee species that are managed and reared for commercial production?
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7
What is the term for the outermost layer of a silkworm cocoon?
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8
What is the composition of 'bee bread'?
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9
In which insect is the uricose gland found?
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10
Which of the following substances is classified as a systemic insecticide?
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Pedagogical Syllabus Blueprint

Beneficial and Harmful Insects MCQs: Preparation Strategy & Exam Blueprint

Examination Weightage & Commission Distribution

In Pakistan's premier competitive examinations—including the Federal Public Service Commission (FPSC General Recruitment & CSS MPT), Punjab Public Service Commission (PPSC Lecturer, Tehsildar & PMS Screening), KPPSC, SPSC, and BPSC—questions derived from Beneficial and Harmful Insects MCQs consistently constitute a decisive 10% to 25% weightage of the Agricultural Entomology paper. Testing agencies frequently evaluate both foundational factual recall and deeper analytical comprehension, requiring aspirants to master key dates, statutory articles, constitutional clauses, and thematic definitions.

High-Yield Conceptual Pillars & Distractor Analysis

Historical trend analysis across past five-year examination cycles demonstrates that examiner traps frequently involve closely matched numerical alternatives, chronologically contiguous treaties, and semantic subtleties in statutory phraseology. When preparing Beneficial and Harmful Insects MCQs, candidates must deliberately review the underlying rationale provided for every question rather than merely memorizing raw answer options. Understanding why incorrect distractors fail is the most reliable predictor of achieving top percentiles in computerized and optical mark recognition (OMR) screening tests.

Negative Marking Mitigation & Time Management Protocol

For examinations enforcing negative marking penalties (such as PPSC's 0.25-mark deduction per erroneous response or NTS gatekeeper quotas), an aggressive elimination technique must be deployed. Candidates should systematically rule out improbable options first to elevate probability thresholds from 25% to 50% or 100%. Allocating an average of 45 to 60 seconds per item during mock trials builds the psychological stamina and cognitive precision required to complete 100-question papers within official 90-minute time limits.

Recommended Reference Sources & Statutory Reading

To achieve definitive conceptual mastery in Agriculture, candidates are advised to cross-reference our solved explanations with primary gazettes, statutory texts, and canonical academic textbooks. Verifying controversial questions against authentic official repositories guarantees that prospective civil servants and professional candidates present incontestable answers during both optical paper evaluations and viva voce departmental interviews.