IGCSE O Level Biology MCQs - Chapter 6
Ecology: O level Biology Multiple Choice Questions (MCQs) PDF Download - 21
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Ecology O level Biology MCQs with Answers PDF Download: MCQ Quiz 21
Mosquito eggs hatch out in the larvae in
- 2 days
- 4 days
- 6 days
- 1 week
A large amount of dilute urine is produced in
- freshwater bony fish
- marine bony fish
- marine boneless fish
- freshwater boneless fish
PH (power of Hydrogen) of about 8 is characteristic of
- sea water
- fresh water
- stagnant water
- lime water
Fish can come to the surface of the water for air-breathing in waters of
- low oxygen concentration
- high oxygen concentration
- low hydrogen concentration
- high hydrogen concentration
Plants capable to survive conditions of extreme drought are
- xerophytes
- hydrophytes
- cortex
- herbaceous
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