Components of The Ecosystem | Our Environment | Assessment | English | Grade 10

A combination of all living organisms, abiotic factors of atmosphere in area and their interaction is called _________

• Environment

• Food chain

• Ecosystem

• Food web

Answer explanation

A combination of all living organisms, abiotic factors of atmosphere in area and their interaction is called ecosystem.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-5

Find odd one out with respect to biotic and abiotic components.

• Microorganisms

• Water

• Frog

• Tree

Answer explanation

As water is abiotic components of ecosystem, and all others are biotic components of ecosystem.

Tags

NGSS.MS-LS2-3

The autotrophs who creates food for all ecosystem are known as __________

• Producer

• Consumer

• Decomposer

• None of these

Answer explanation

The autotrophs who creates food for all ecosystem are known as producer

Tags

NGSS.MS-LS1-6

What is the flow of energy in an ecosystem?

• bidirectional

• multi directional

• no specific direction

• unidirectional

Answer explanation

As the flow of energy is only in one direction hence option 4 is correct answer.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Choose correct option from given statement. Statement 1 : Food web is part of food chain Statement 2: Food chain is part of food web.

• Statement 1

• Statement 2

• Neither statement 1 or statement 2

• Both statement 1 and statement 2

Answer explanation

As we know many food chains combines and forms a food web hence statement 2 is correct and option 2 is correct answer.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

What will be the energy available at the producer level, if the amount of energy at fourth trophic level is 6 kJ, in a given food chain? Grass → Grasshopper → Frog → Snake → Hawk

• 6 k J

• 60 k J

• 600 k J

• 6000 k J

Answer explanation

As we know only 10% of energy is passed down at each level of food chain. Means if it is 6 kJ at fourth level the its is 60 kJ at third level, 600 kJ at second level and 6000 kJ at first level that is producer.

Tags

NGSS.MS-LS2-3

Anuj suddenly fell ill, and the doctor told him that the amount of non biodegradable components such as DDT is higher in his body. Choose the correct option showing the cause of Anuj's illness.

• eutrophication

• pollution

• biomagnification

• None of these

Answer explanation

Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as biomagnification, hence the reason of Anuj's illness is biomagnification.