Relationship among living beings

Organisms are classified into trophic levels according to
Where they live
The source of their nutrients
How much they weigh
Algae are producers in aquatic ecosystems
True
False
Which of the following is a producer?
A cow
A mushroom
An oak tree
Carnivores are primary consumers.
True
False
Decomposition is carried out by
Fungi
Heterotrophic bacteria
Both A and B
Tertiary consumers feed on
Producers
Primary consumers
Secondary consumers
In the food chain: acorns ---> squirrels ---> fox ----> bacteria, the fox is a
Producer
Primary consumer
Secondary consumer
An omnivore is a primary consumer if it eats blackberries but it is a secondary consumer if it eats a rabbit
True
False
Birds make their nests in the branches of the trees where they are protected from the wind and the rain
Commensalism
Parasitism
Predation
The fleas and the lice live in the coat of the animals and they feed on their blood.
Symbiosis
Commensalism
Parasitism
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