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IGCSE O Level Biology Competitive Exam: Practice Test 13 (Chapter 6)

Ecology: O level Biology Multiple Choice Questions (MCQs) PDF Download - 13

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The Ecology O level Biology Multiple Choice Questions (MCQs) with Answers PDF (Ecology O level Biology MCQs PDF e-Book) download Ch. 6-13 to study IGCSE O Level Biology Course. Practice Carbon Cycle and Fossil Fuels MCQs, Ecology O level Biology quiz questions and answers PDF for ACT subject test tutoring. The Ecology O level Biology MCQs App Download: Free IGCSE O Level Biology App to study ecology and environment, learning biology, habitat specialization due to salinity, physical environment: ecology career test to study online schools courses.

The MCQ: Coal, natural gas and oil are forms of "Ecology: O level Biology" App Download [Free] with answers: carbon compounds only, fossil fuels only, nitrogen compounds, and fossil fuels and carbon compounds to study online schools courses. Solve Biotechnology: Fermentation Products Quiz Questions, download Google eBook (Free Sample) for accredited online colleges.

Ecology O level Biology MCQs with Answers PDF Download: MCQ Quiz 13

MCQ: 61

Coal, natural gas and oil are forms of

  1. fossil fuels only
  2. carbon compounds only
  3. nitrogen compounds
  4. fossil fuels and carbon compounds
MCQ: 62

In plants, seed formation occurs when the

  1. flowering season starts
  2. environment is suitable for growth
  3. unfavorable season approaches
  4. fruit turns lumpy
MCQ: 63

Due to salt concentrations, aquatic animals are confronted with

  1. feeding problems
  2. breathing problems
  3. excretory problems
  4. osmotic problems
MCQ: 64

For most types of fresh water organisms, best water has a

  1. pH above 8
  2. pH below 8
  3. pH almost 7
  4. pH below 7
MCQ: 65

Fall in temperature may result in a

  1. death
  2. increase in metabolic activities to produce heat
  3. decrease in metabolic activities of animals
  4. decrease the production of heat

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Ecology: O level Biology MCQ App (Android & iOS)

Ecology O level Biology MCQ App

O Level Biology MCQ App (iOS & Android)

O Level Biology MCQ App

A level Biology MCQs App (iOS & Android)

A level Biology MCQs App

10th Grade Biology MCQs App (Android & iOS)

10th Grade Biology MCQs App