IGCSE O Level Biology Practice Test 324

Physical Environment: Ecology Multiple Choice Questions (MCQs) PDF Download - 324

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The MCQ: If plants absorb carbon dioxide (CO₂) in water (H₂O), the water becomes; "Physical Environment: Ecology" App (Free Android & iOS) with answers: Acidic; Alkaline; Neutral; Salty; for schools that offer online bachelor degrees. Practice Ecology O level Biology Questions and Answers, Apple e-Book to download free sample for online college bachelor degree.

Physical Environment: Ecology MCQ Quiz with Answers PDF Download: Test 324

MCQ 1616:

If plants absorb carbon dioxide (CO₂) in water (H₂O), the water becomes

alkaline
acidic
neutral
salty

MCQ 1617:

Chlorophyll is a chemical substance, exists in chloroplasts of plants, with the property of

green in color
changeable through light spectrum.
not green in color
absorbing red and blue light more, then other colors.

MCQ 1618:

Nasal cavities and Eustachian tubes open in

Larynx
Pharynx
Trachea
Glottis

MCQ 1619:

Internal skeleton is made up of bones and cartilage in

mammals
nematodes
arthropods
Echinodermata

MCQ 1620:

Long term effects are incurred in man due to imbalance of

adrenaline
thyroxin
testosterone
progestrone

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