Test Details

Our Environment

Jan 27, 1:00 AM

90 minutes

Apr 30, 1:00 AM

100.0 marks

MCQ

50 questions

Sushil Susawat

Class Details

Maths

Science

English

Class 10th

Maths

Science

English

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Question Text

Question 4 :
In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level? Grass → Grasshopper → Frog → Snake → Hawk

Question 5 :
State TRUE or FALSE: Consumer in a food chain are living creatures that eat organisms from a different population.

Question 6 :
Which of the following limits the number of trophic levels in a food chain?

Question 8 :
How can you help in reducing the problem of waste disposal?

Question 10 :
State TRUE or FALSE: Food web consists of a number of interlinked food chains.

Question 12 :
Suggest one word for the statement/ definition: Organisms which depend on the producers either directly or indirectly for food

Question 15 :
State TRUE or FALSE: Biomagnification, also known as bioamplification or biological magnification, is any concentration of a toxin, such as pesticides, in the tissues of tolerant organisms at successively higher levels in a food chain.

Question 16 :
What are the materials which change their form and structure over time?

Question 21 :
In which year UNEP succeeded in forging an agreement to freeze the CFC production at 1986 levels?

Question 25 :
Which of the following group does not contain only biodegradable items?

Question 26 :
State TRUE or FALSE: Is the flow of energy in an ecosystem is unidirectional ?

Question 27 :
The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about

Question 28 :
State True or False: Producers prepare their own food from inorganic compounds

Question 29 :
Which of the following groups does not contain all biodegradable items?

Question 32 :
From the below options which is the common food chain of a pond ecosystem.

Question 33 :
State True or False: Plants convert solar energy into chemical energy

Question 34 :
State TRUE or FALSE: There is a loss of energy as we go from one trophic level to the next, this limits the number of trophic levels in a food-chain.

Question 35 :
Accumulation of chemicals at the successive trophic levels of food chain is called

Question 39 :
Which of the following are the problems caused by non biodegrdable wastes?

Question 40 :
Suggest one word for the statement/ definition: Each level of food chain where transfer of energy takes place

Question 41 :
State TRUE or FALSE: Plants are producers. They make their own food, which creates energy for them to grow, reproduce and survive.

Question 43 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cff273b230584979b80.jpg' /> In the given figure the various trophic levels are shown in a pyramid. At which trophic level is maximum energy available?

Question 45 :
State True or False: All green plants and blue green algae are producers

Question 47 :
In an ecosystem, the 10% of energy available for transfer from one trophic level to the next is in the form of

Question 48 :
The increase in the concentration of harmful chemical substances in the body of living organisms at each trophic level of a food chain is called

Question 49 :
Which group of organisms are not constituents of a food chain? (i) Grass, lion, rabbit, wolf (ii) Plankton, man, fish, grasshopper (iii) Wolf, grass, snake, tiger (iv) Frog, snake, eagle, grass, grasshopper

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