IGCSE O Level Biology Study App | Tissue Respiration Gas Exchange and Breathing MCQs e-Book PDF

IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 136

Tissue Respiration Gas Exchange and Breathing MCQ with Answers PDF Download – Test 136

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Study IGCSE O Level Biology MCQs App (iOS & Android) with MCQ: "Respiration is a/an"; with answers: mechanical process, chemical process, oxidation process, and electrical process. Practice Respiration in Biology Questions and Answers, Google e-Book to download free chapter for biology remote participation.

Tissue Respiration Gas Exchange & Breathing MCQ – Mock Test 136 PDF Download

MCQ 676: Respiration is a/an:

  1. chemical process
  2. mechanical process
  3. electrical process
  4. oxidation process

MCQ 677: In ecosystem, Biomass is the:

  1. total mass of living matter at each trophic level
  2. total mass of living things in a biosphere
  3. total number of living organisms in a given area
  4. total energy transferred to each trophic level

MCQ 678: Thick, muscular and elastic walls are characteristics of:

  1. endothelium
  2. arteries
  3. veins
  4. capillaries

MCQ 679: For excretion, animals with impermeable skin use:

  1. simple diffusion process
  2. produce concentration gradient
  3. special excretory glands
  4. special excretory organs

MCQ 680: Mycelia is formed through thread like structures called as:

  1. cilia
  2. hypha
  3. hydra
  4. flagella

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