IGCSE O Level Biology MCQs - Chapter 6

Ecology: O level Biology Multiple Choice Questions PDF Download - 21

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Ecology O level Biology Questions & Answers PDF Download: MCQ Quiz 21

MCQ 101: Mosquito eggs hatch out in the larvae in

A) 2 days

B) 4 days

C) 6 days

D) 1 week

MCQ 102: A large amount of dilute urine is produced in

A) freshwater bony fish

B) marine bony fish

C) marine boneless fish

D) freshwater boneless fish

MCQ 103: PH (power of Hydrogen) of about 8 is characteristic of

A) sea water

B) fresh water

C) stagnant water

D) lime water

MCQ 104: Fish can come to the surface of the water for air-breathing in waters of

A) low oxygen concentration

B) high oxygen concentration

C) low hydrogen concentration

D) high hydrogen concentration

MCQ 105: Plants capable to survive conditions of extreme drought are

A) xerophytes

B) hydrophytes

C) cortex

D) herbaceous

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