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IGCSE O Level Biology Certification Exam Tests

IGCSE O Level Biology Practice Test 137

Exam Preparation: Biology Quiz Questions and Answers PDF - 137

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Exam Preparation: Biology Questions and Answers PDF Download: Quiz 137

MCQ 681: In any ecosystem, the ultimate source of energy is

  1. plants as primary consumers
  2. sun as radiant energy
  3. secondary consumer
  4. heterotroph

MCQ 682: If heat loss center is activated in hypothalamus, the control mechanism include all, but

  1. vasodilation
  2. rapid breathing
  3. lower metabolic activity
  4. lesser convection

MCQ 683: Each nephron consists of

  1. distal convoluted tubule
  2. proximal convoluted tubule
  3. Bowman' capsule
  4. all of above

MCQ 684: Number of alkaloids in opium are at least

  1. 20
  2. 25
  3. 30
  4. 35

MCQ 685: Growth of bacteria in hair follicle is prevented through

  1. Chyle
  2. Chyme
  3. sebum
  4. cillia

IGCSE O Level Biology Exam Prep Tests

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Exam Preparation Biology App (Android & iOS)

Exam Preparation Biology App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (iOS & Android)

College Biology App (Android & iOS)

College Biology App (Android & iOS)

A level Biology App (Android & iOS)

A level Biology App (iOS & Android)