IGCSE O Level Biology MCQs – Mock Test 178

Pollution: Causes of Pollution MCQs with Answers PDF Download – Test 178

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Pollution: Causes of Pollution MCQ – Mock Test 178 PDF Download

MCQ 886: Gaseous pollutants include:

biological decay
forest fires
volcanic eruptions
all of above

MCQ 887: Branches of leaf veins end in:

upper epidermis
lower epidermis
mesophyll cells
none of others

MCQ 888: Cell surface membrane does not support in all of others but:

osmosis
leakage of water to the soil
leakage of salts and amino acids to the soil
reducing the cell surface: volume ratio

MCQ 889: Combination of glucose (C₆H₁₂O₆) and fructose (C₆H₁₂O₆) molecules result in:

maltose
sucrose
galactose
lactose

MCQ 890: In context of respiration, inspired air has:

less oxygen
more water vapors
less carbon dioxide
a high temperature

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