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Science Quiz : Ecology & Resources

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Try the Quiz : Science Quiz : Ecology & Resources

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QUESTIONANSWEREXPLANATION
In atom bomb explosion, _______ energy is primarily converted into _______ energy.
• atomic, sound
• atomic, heat
• chemical, atomic
• chemical, light
atomic, heat
The property of plants to manufacture their food is known as _______.
• Phototropism
• Phototaxis
• Autotrophism
• Photokinesis
Autotrophism
_______ convert chemical energy to electrical energy.
• Bulbs
• Microwave ovens
• Battery cells
• Air conditioners
Battery cells
Which is not a scavenger ?
• Camel
• Vulture
• Hyaena
• Crow
CamelScavenger is an organism which feeds on dead and putrefying flesh.
When coal is burnt, _______ energy is converted into light and heat.
• Chemical
• Electric
• Atomic
Chemical
What is the name given to the green pigment in plants ?
• Stomata
• Tendrils
• Chlorophyll
• Starch
Chlorophyll
From the bark of which tree is quinine obtained?
• Redwood
• Eucalyptus
• Bunyan
• Cinchona
Cinchona
What is quinine used for ?
• Curing Malaria
• Curing Aids
• Curing Typhoid
• Removing pimples
Curing Malaria
Which organism is helpful in making the soil fertile ?
• Roundworm
• Beetle
• Earthworm
• Ringworm
Earthworm
When water is boiled, it is converted into steam. This is an example of conversion of _______ energy to mechanical energy.
• Chemical
• Light
• Atomic
• Heat
Heat
Which is not a herbivorous animal ?
• Lion
• Cow
• Monkey
• Deer
LionHerbivores are plant-eating animals. Lion is a carnivorous (flesh-eating) animal.
Movement of organisms away from the sunlight is known as _______.
• Positive phototaxis
• Photoperiodism
• Autotrophism
• Negative phototaxis
Negative phototaxisMovement of organisms in response to sunlight is known as phototaxis. Earthworms exhibit negative phototaxis, while green flagellates exhibit positive phototaxis.
Which is a by-product of photosynthesis ?
• Oxygen
• Carbon dioxide
• Nitrogen
• ATP
OxygenIn the presence of sunlight, plants utilize CO2 to prepare their food. This can be expressed as: carbon dioxide + water ------> glucose + water + oxygen
_______ is made from bamboo plants.
• Silk
• Paper
• Jute
• Rubber
Paper
Which is not a 'renewable' resource of energy ?
• Sun
• Water
• Petroleum
• Wind
Petroleum
Plants manufacture their food by the process of
• Symbiosis
• Photosynthesis
• Photokinesis
• Chemosynthesis
PhotosynthesisIn the presence of sunlight, plants utilize CO2 to prepare their food. This can be expressed as: carbon dioxide + water ------> glucose + water + oxygen
Light energy is converted into chemical energy by the process of
• Photokinesis
• Photoperiodism
• Photosynthesis
• Symbiosis
PhotosynthesisIn the presence of sunlight (light energy), plants utilize CO2 to prepare their food (chemical energy). This can be expressed as: carbon dioxide + water ------> glucose + water + oxygen
The response of plants to light is known as
• Chemotropism
• Phototropism
• Thigmotropism
• Hydrotropism
Phototropism
Autotrophic component of the ecosystem
• Producers
• Consumers
• Decomposers
• All of these
ProducersEcosystem has two components : biotic or living and abiotic or non-living. Biotic components include producers (autotrophic components i.e., plants), consumers and decomposers. Abiotic components include organic and inorganic substances and environmental factors.
Nitrogen-fixing bacterium
• Lactobacillus
• Rhizobium
• Clostridium
• Salmonella
RhizobiumRhizobium is found in root nodules of pea. It gets its nourishment from these plants. In turn, it provides nitrates to the plants which are used in protein synthesis. This is a good example of symbiosis.
Interaction between organisms of different species so as to get benefit from each other is known as
• Saprophytism
• Predation
• Symbiosis
• Etiolation
SymbiosisRhizobium is found in root nodules of pea. It gets its nourishment from these plants. In turn, it provides nitrates to the plants which are used in protein synthesis. This is a good example of symbiosis.
Which is not true regarding parasites ?
• They are always beneficial to the other organism.
• They live on or inside the other organism.
• They derive their food from the organism on which they live.
• Leech is a parasite.
They are always beneficial to the other organism.Parasites derive their nutrition from the organism on which they live and thus deprive the organism of those nutrients.
Which is not a 'biotic part' of the ecosystem ?
• Plants
• Insects
• Bacteria
• Water
WaterEcosystem has two components : biotic or living and abiotic or non-living. Biotic components include producers, consumers and decomposers. Abiotic components include organic and inorganic substances and environmental factors.
Which is not a 'nonrenewable' source of energy ?
• Wind
• Coal
• Petrol
• Soil
Wind
Which fungus is used in making bread?
• Aspergillus
• Penicillium
• Pleurotus
• Yeast
YeastYeast is a leavening agent used in baking. It causes fermentation of carbohydrates and produces gas which lightens the dough.
Belladona has medicinal properties.
• True
• False
TrueBelladona is a herb used in praparing many drugs.
Saprophytes derive their food from dead organisms.
• True
• False
True
Silk fibre is produced by certain insects.
• False
• True
TrueSilk fibres are produced by silkworms to form a protective covering (cocoon) around themselves.
Water is used to produce electricity.
• True
• False
TrueElectricity produced with the help of water is known as hydroelectricity. Water falling from a height causes rotation of turbines which in turn causes movement of generators to produce electricity.
Food energy is transferred from one organism to the other through food webs.
• True
• False
TrueThe interlinking of several food chains constitutes food webs.
Mammals are homeothermic animals.
• True
• False
TrueHomeothermic organisms like mammals and birds are capable of maintaining a constant body temperature despite changes in atmospheric temperature.
Man is an amphibian.
• True
• False
FalseAmphibians are organisms which are capable of living inside as well as outside the water, e.g., frog, toad, alligator, crocodile, newt and salamander.
Very high concentration of carbon dioxide accelerates plant growth.
• True
• False
FalseVery high concentration of carbon dioxide retards plant growth. 
'Lac' is a plant product.
• True
• False
FalseLac is a semisolid substance secreted by 'lac insects'.

Try the Quiz : Science Quiz : Ecology & Resources


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