IGCSE O Level Biology MCQs – Practice Test 15 (Chapter 6)

Ecology: O level Biology Quiz with Answers PDF Download – Test 15

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Ecology O level Biology Exam Questions and Answers PDF Download: Test 15

MCQ 71: Two or more food chains may be interlinked through:

food web
food cycle
carbon cycle
nitrogen cycle

MCQ 72: Excess water entering in body cells accompanied with a loss of salts is faced by:

freshwater bony fish
marine bony fish
marine boneless fish
freshwater boneless fish

MCQ 73: Energy released as heat to the environment:

returns to the same system
returns to the same organisms that produced it
is non-cyclical in nature
is converted to light

MCQ 74: Ecological niche defines the:

function of an organism in its habitat
diet of an organism
the food chain
population of an organism

MCQ 75: In ecosystem ,Pupa survives through:

feeding through the water
feeding through the proboscis
the food accumulated in the larva stage
caudal flaps

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