GRADE 8 BIOLOGY(ECOSYSTEM)

The term 'ecosystem' was coined by

• R H whittakar

• Charles Darwin

• Sir Arthur Tansely

• Lord Rutherford

Organism that make their own food are called as _______.

• Heterotrophs

• Carnivores

• Herbivores

• Autotrophs

Heterotrophs do not contain _____________.

• primary consumers

• producers

• secondary consumers

• top carnivores

Animals that eat dead animals are called as __________.

• decomposers

• scavengers

• top carnivores

• herbivores

Grasshoppers are

• carnivores

• herbivores

• decomposers

• scavengers

A tarantula is a _____________.

• herbivore

• producer

• secondary consumer

• scavenger

Mushrooms are ___________.

• scavengers

• autotrophs

• herbivores

• decomposers

what type of component is Soil?

• Biotic

• Abiotic

• physical factor

• chemical factor

Soil provides the following __________.

• food

• air

• shelter

• water

Nitrogen is converted to _________ in the soil by certain microorganisms.

• ammonia

• urea

• nitrates

• gas