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IGCSE O Level Biology Competitive Exam MCQs – Mock Test 91

Pollution: Pesticides and DDT Notes Questions with Answers PDF Download – Test 91

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Free "Pollution: Pesticides & DDT Notes" App Download (Android & iOS): In terms of tolerance range for oxygen (O2), Tubifex worms and fish are; MCQ with answers: alike, differ, opposite, and approximately same. Learn Effects of Human Activity on Ecosystem Questions and Answers, Apple Book to download free chapter to improve educational achievement.

Pollution: Pesticides & DDT MCQs – Mock Test 91 PDF Download

MCQ 451: In terms of tolerance range for oxygen (O2), Tubifex worms and fish are:

  1. differ
  2. alike
  3. approximately same
  4. opposite

MCQ 452: Disadvantages of pesticides includes:

  1. healthier crops
  2. higher yield of crops
  3. non-biodegradable pesticides
  4. availability of more food

MCQ 453: Viruses are not considered cells because they:

  1. cannot divide
  2. do not have a nucleus
  3. do not have a protoplasm
  4. are non-living things

MCQ 454: Ovary and ovules form the:

  1. fruit
  2. non-endospermic seeds
  3. provide food to growing cotyledons
  4. shell of hard fruits

MCQ 455: In order to attract insects for pollination,:

  1. petals are brightly colored
  2. petals are protected by calyx
  3. epicalyx is essential
  4. petals have large surface area

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