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question_answer1)
Which one of the following is a non-biodegradable waste?
A)
Wood done
clear
B)
Cattle dung done
clear
C)
Polythene bags done
clear
D)
Paper done
clear
E)
None of these done
clear
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question_answer2)
Which one of the following is a bio-degradable waste?
A)
Iron nails done
clear
B)
Silver foils done
clear
C)
Plastic bottles done
clear
D)
Animal bones done
clear
E)
None of these done
clear
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question_answer3)
Decomposers in ecosystem act as _____ of environment.
A)
Recycling agent done
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B)
Cleansing agents done
clear
C)
Producers done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
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question_answer4)
Microscopic organisms freely floating on the surface of water in a pond are called _________.
A)
Herbivorous done
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B)
Planktons done
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C)
Carnivorous done
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D)
Producers done
clear
E)
None of these done
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question_answer5)
Which one of the following statements is correct?
Statement 1: A grassland is an example of a land based ecosystem. |
Statement 2: A pond is an example of a water based ecosystem. |
A)
Statement 1 done
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B)
Statement 2 done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect done
clear
E)
None of these done
clear
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question_answer6)
In terms of food chain, which of the following belongs to the same trophic level?
A)
Snake and grass done
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B)
Grass and tree done
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C)
lizard and elephant done
clear
D)
Bacteria and grass done
clear
E)
None of these done
clear
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question_answer7)
Which of the following is a food chain?
A)
Grass \[\to \] rice \[\to \] sugarcane done
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B)
Grass \[\to \] fish \[\to \] elephant done
clear
C)
Snake \[\to \] grass \[\to \] elephant done
clear
D)
Grass \[\to \] goat \[\to \] lion done
clear
E)
None of these done
clear
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question_answer8)
In the given food chain plants \[\to \] goat \[\to \] man, if 100 J of energy is available at the producer level, then the energy transferred to the man is____.
A)
\[10J\] done
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B)
\[1J\] done
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C)
\[0.1J\] done
clear
D)
\[100J\] done
clear
E)
None of these done
clear
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question_answer9)
The large carnivores which feed upon the small carnivores are called:
A)
Primary consumers done
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B)
Secondary consumers done
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C)
Tertiary consumers done
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D)
All the above done
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E)
None of these done
clear
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question_answer10)
In the following food chain eagle is at which trophic level?
A)
Second trophic level done
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B)
First trophic level done
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C)
Fourth trophic level done
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D)
Third trophic level done
clear
E)
None of these done
clear
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question_answer11)
A food chain involves Flower \[\to \] Caterpillar \[\to \]Frog \[\to \]Snake \[\to \]Owl. If all the owls are removed from this food chain then which of the following options is correct?
A)
Number of caterpillars will increase greatly. done
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B)
Population of frogs will decrease apparently. done
clear
C)
Population of snakes will increase greatly. done
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D)
All the above done
clear
E)
None of these done
clear
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question_answer12)
The given table classifies four animals P, Q, R, S according to their feeding habit
Herbivorous | Carnivorous | Omnivorous |
P Q | R | S |
Which of the following shows their correct interlinking with respect to their feeding habits?
A)
B)
C)
D)
E)
None of these done
clear
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question_answer13)
Which one of the following options belongs to phytoplanktons?
A)
Algae done
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B)
Protozoa done
clear
C)
Fungi done
clear
D)
Virus done
clear
E)
None of these done
clear
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question_answer14)
Which of the following belongs to a group of biotic component of the environment?
A)
Tree, water, soil, animals done
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B)
Soil, animals, plants, sea done
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C)
Animal, plants, microorganisms done
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D)
Microorganisms, plants, soil, water done
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E)
None of these done
clear
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question_answer15)
Decomposers are also known as :
A)
Autotrophs done
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B)
Producers done
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C)
Saprotrophs done
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D)
Tertiary consumers done
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E)
None of these done
clear
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question_answer16)
Which of the following constitutes a food chain?
A)
Mango, Bamboo, Lion, Human done
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B)
Grass, Rice, Banana, Fish done
clear
C)
Grass, Snail, Small fish, Human done
clear
D)
Elephant, Grass, Zebra, Fish done
clear
E)
None of these done
clear
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question_answer17)
Which of the following belongs to the same trophic level?
A)
Parrot and Rabbit done
clear
B)
Spider and Crab done
clear
C)
Kangaroo and Giraffe done
clear
D)
Centipede and Millipede done
clear
E)
None of these done
clear
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question_answer18)
Direction: Look at the following figure and answer the questions.
Which of the following can replace X to complete the given food chain?
A)
B)
C)
D)
E)
None of these done
clear
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question_answer19)
Direction: Look at the following figure and answer the questions.
?X? is a :
A)
Producer done
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B)
Primary consumer done
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C)
Secondary Consumer done
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D)
Tertiary consumer done
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E)
None of these done
clear
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question_answer20)
Which of the following statements best describes the food web?
A)
Sequence of living organisms in a community in which one organism consumes another organism to transfer food energy. done
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B)
Inter - connected food chains operation in an ecosystem which establish a network of relationships between various species. done
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C)
A diet which contains all the nutrients in appropriate amount. done
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D)
A food chain that contains only herbivores. done
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E)
None of these done
clear
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question_answer21)
Ten percent law was given by:
A)
Darwin done
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B)
Linnaeus done
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C)
Lindeman done
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D)
Pasteur done
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E)
None of these done
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question_answer22)
Increase in the concentration of harmful chemical substances in the body of living organisms is known as:
A)
Biological oxygen demand done
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B)
Biomagnification done
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C)
Biosynthesis done
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D)
Biogeochemical cycle done
clear
E)
None of these done
clear
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question_answer23)
We can prevent global warming by:
A)
Using 3R?s for waste management. done
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B)
Maximising the use of fossil fuels. done
clear
C)
Planting more and more trees. done
clear
D)
Both [a] and [c] done
clear
E)
None of these done
clear
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question_answer24)
Which of the following substances is not an example of ODS?
A)
Chlorofluorocarbon done
clear
B)
Methane done
clear
C)
Nitrous oxides done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer25)
Which of the following diseases can be caused due to UV radiations?
A)
Skin cancer done
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B)
Malaria done
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C)
Typhoid done
clear
D)
Anaemia done
clear
E)
None of these done
clear
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question_answer26)
A self-contained unit of living things and their non-living environment is known as :
A)
Forest done
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B)
Ecosystem done
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C)
Biosphere done
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D)
Habitat done
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E)
None of these done
clear
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question_answer27)
Among the four living organisms R is present at the first trophic level while P is a secondary consumer because it depends on Q for its food and S is a tertiary consumer .Then which of the following options is correct for P, Q, R, S?
A)
P-Plant products, Q- Snake, R - Lion, S-Hawk done
clear
B)
P -Frog, Q-Grasshopper, R- Plant products, S-Snake done
clear
C)
P-Grasshopper, Q-Snake, R-Plant products, S-Frog done
clear
D)
P-Snake, Q -Plant products, R- Frog, S-Grasshopper done
clear
E)
None of these done
clear
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question_answer28)
At which trophic level the minimum energy is available in the given pyramid?
A)
\[At\,\,{{T}_{1}}\] done
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B)
\[At\,\,{{T}_{2}}\] done
clear
C)
\[At\,\,{{T}_{3}}\] done
clear
D)
\[At\,\,{{T}_{4}}\] done
clear
E)
None of these done
clear
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question_answer29)
Which of the following is a producer?
A)
Pitcher plant done
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B)
Phytoplankton done
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C)
Cyanobacteria done
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D)
All the above done
clear
E)
None of these done
clear
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question_answer30)
______ is an artificial ecosystem.
A)
Desert done
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B)
Forest done
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C)
Crop field done
clear
D)
River done
clear
E)
None of these done
clear
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question_answer31)
Which of the following will have the maximum concentration of harmful chemicals in its body? Slug, Pigeon, Cat, Lettuce
A)
Slug done
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B)
Pigeon done
clear
C)
Lettuce done
clear
D)
Cat done
clear
E)
None of these done
clear
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question_answer32)
Which of the following is not a mode of waste disposal?
A)
Incineration done
clear
B)
Composting done
clear
C)
Incubation done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer33)
Direction: are given below. A portion of a river is covered with a green layer of tiny floating organisms L on its surface and the pond water also contains organisms like tadpole, small fish, Alligator. Organism L could be:
A)
Amoeba done
clear
B)
Arthropoda done
clear
C)
Algae done
clear
D)
Fungi done
clear
E)
None of these done
clear
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question_answer34)
Direction: are given below. A portion of a river is covered with a green layer of tiny floating organisms L on its surface and the pond water also contains organisms like tadpole, small fish, Alligator. Which of the following is the correct food chain for the above organisms?
A)
Algae \[\to \]Tadpole \[\to \]Small fish \[\to \]Alligator done
clear
B)
Tadpole \[\to \]Small fish \[\to \]Algae \[\to \] Alligator done
clear
C)
Algae \[\to \]Tadpole \[\to \]Alligator \[\to \]Small fish done
clear
D)
Algae \[\to \]Alligator \[\to \]Small fish \[\to \]Tadpole done
clear
E)
None of these done
clear
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question_answer35)
Which form of energy is transferred from one trophic level to another trophic level according to ten percent law?
A)
Light energy done
clear
B)
Electrical energy done
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C)
Chemical energy done
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D)
Mechanical energy done
clear
E)
None of these done
clear
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question_answer36)
\[{{O}_{2}}\] is converted to\[{{O}_{3}}\]by _____ radiations.
A)
Gamma radiations done
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B)
Infrared radiations done
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C)
Ultraviolet radiations done
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D)
Cosmic radiations done
clear
E)
None of these done
clear
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question_answer37)
A method in which garbage is burned at very high temperature to form as is known as:
A)
Composting done
clear
B)
Incineration done
clear
C)
Recycling done
clear
D)
Depletion done
clear
E)
None of these done
clear
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question_answer38)
Which of the following is incorrectly matched?
A)
Aquarium - an artificial ecosystem. done
clear
B)
Parasite - organism which lives in or on another organism. done
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C)
Phytoplankton - microscopic marine animals. done
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D)
Ecology - study of interactions among organisms and their environment. done
clear
E)
None of these done
clear
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question_answer39)
Animal X in the given food chain is a :
A)
Producer done
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B)
Primary consumer done
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C)
Secondary consumer done
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D)
Tertiary consumer done
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E)
None of these done
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question_answer40)
A man is known as a tertiary consumer when he eats :
A)
Small fish done
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B)
Bread done
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C)
Meat done
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D)
Sunflower oil done
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E)
None of these done
clear
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