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60 questions
Cutting of trees in a forest is callled
Reforestation
Deforestation
tree fall
None of them
Which gas is mainly responsible for the green house effect?
H2
O2
CO2
Water Vapours
Which of the following is not a renewable source of energy?
Sun energy
Nuclear Energy
Wind Energy
All are renewable sources
Which of the following is biodegradable?
Plastic
Paper
Glass
None of them are biodegradable
Global warming will cause an increase of......
Heat Waves
Hurricanes
Floods
All of them are true
You can ........... plastic bags again and again until they get holes in them.
Reduce
Reuse
Resume
Rewaste
Energy efficient vehicles and appliances use.......
less energy
more energy
much energy
no energy
The major part of our rubbish is taken to...................
landfills
fuel lands
wastelands
rubbish fields
Gases that stop heat from escaping into space are called _______ gases.
green
zero-emission
greenhouse
greenfield
The place in which a plant, animal, bird or fish normally lives is its ........
food chain
habitat
eco-community
eco-friendly
What is abiotic component of environment?
Chair
Water
Butterfly
None of the Bove
When is World Environment Day is celebrated?
5 February
5 August
5 June
5 may
Which is a threat to a environment
Growing plants
Growing crops
Growing population
None of these
narrow zone where land water and air interact is called
Environment
Hydrosphere
Biosphere
Lithosphere
Every food chain in the ecosystem begins with____which are the original source of food.
Saprophytes
Producers
Parasytes
Consumers
Which of the following are trophic levels? Choose 2 options:
Primary Consumers
Sunlight
Top Carnivores
Producers
Which among the following statements is incorrect in view of the plants?
They convert the solar energy into mechanical energy.
They prepare their food from organic compounds.
They are also called producers.
They are the initial source of energy in a food chain
All the interacting organisms in an area together with the non-living constituents of the environment form a/an __________.
ecosystem
nature
forest
city
As human beings occupy the top level in any food chain, the maximum concentration of these chemicals get accumulated in our bodies. This phenomenon is known as
Biological magnification
Biological accumulation
Chemical magnification
Chemical accumulation
Improvements in our life-style have resulted in greater amounts of:
energy generation
carbon dioxide generation
oxygen generation
waste material generation
What will happen if deer is missing in the food chain given above? Choose 2 correct options:
The population of tiger decreases
population of grass increases
The population of tiger increases
The population of grass decreases
Which of the two belong to the same trophic level?
Frog
Monkey
Eagle
Lizard
Human-made materials like ____ will not be broken down by the action of bacteria or other saprophytes.
Vitamins
Fats
Carbohydrates
Plastics
There is ______ of energy as we go from one trophic level to the next
a gain
an increase
a loss
no change
The natural environment consists of................................... .
Activities among human beings
Plants and animals that surround the human beings
Creations among human beings
Interactions among human beings
1. Land,water, air, etc, comprise the ...................environment.
Natural
Human
Man-made
Artificial
1. What is an abiotic component of environment?
Table
Water
Human
None of these
Natural environment can be divided into............................types.
Two
Three
Five
Four
An artificial ecosystem is
Pond
Forest
Desert
Crop field
Which of the following is a primary consumer in a grassland ecosystem?
What percentage of energy is passed on to next tropic level?
10%
50%
90%
100%
What is this called?
Food Web
Food Chain
Abiotic Factors
Biotic factors
Which organism recieves the least amount of energy from the producer?
Owl
Grasshopper
Lilypad
Mouse
Consider the following food chain:
Algae > Mayfly > Minnow > Trout
In a polluted ecosystem, which organism is likely to have the HIGHEST level of toxic chemicals in its body?
Algae
Mayfly
Minnow
Trout
What does the Ozone in the atmosphere do?
causes the greenhouse effect
causes acid rain
protects the Earth from harmful infrared (IR) rays
protects the Earth from harmful ultraviolet (UV) rays
What damage can UV rays cause?
can cause sunburn.
can cause some types of skin cancer.
cataracts.
all of the above
Identify the non- biodegradable substance from the following.
Paper
Tin cans
Vegetable peels
Wood
Every food chain in the ecosystem begins with____which are the original source of food.
Saprophytes
Producers
Parasytes
Consumers
Which among the following statements is incorrect in view of the plants?
They convert the solar energy into mechanical energy.
They prepare their food from organic compounds.
They are also called producers.
They are the initial source of energy in a food chain
All the interacting organisms in an area together with the non-living constituents of the environment form a/an __________.
ecosystem
nature
forest
city
As human beings occupy the top level in any food chain, the maximum concentration of these chemicals get accumulated in our bodies. This phenomenon is known as
Biological magnification
Biological accumulation
Chemical magnification
Chemical accumulation
Improvements in our life-style have resulted in greater amounts of:
energy generation
carbon dioxide generation
oxygen generation
waste material generation
What will happen if deer is missing in the food chain given above? Choose 2 correct options:
The population of tiger decreases
population of grass increases
The population of tiger increases
The population of grass decreases
Fill in the empty slots below:
An ecosystem consists of abiotic components comprising physical factors like:
1. ___soil ___
2.___________
3.___________
4. _minerals_
6.___________
temperature
rainfall
animals
wind
Human-made materials like ____ will not be broken down by the action of bacteria or other saprophytes.
Vitamins
Fats
Carbohydrates
Plastics
There is ______ of energy as we go from one trophic level to the next
a gain
an increase
a loss
no change
The problem caused due to ozone hole is
earthquakes
damage due to UV radiations
chemical pollution
acid rain
When is the world environment day celebrated?
16 June
5 December
5 June
5 July
Which of these does not belong to biotic component?
Parasites
Fungi
Bacteria
Soil
The transfer of energy in a food chain is always:
Unidirectional
Methane
Bi-directional
Random
Which of the statements is incorrect?
All green plants and blue green algae are producers
Green plants get their food from organic compounds
Producers prepare their own food from inorganic compounds
Plants convert solar energy into chemical energy
Which of these organisms are the most important decomposers in an ecosystem?
Algae and fungi
Fungi and bacteria
Algae and bacteria
Bacteria and virus
The decomposers in an ecosystem
convert inorganic material, to simpler forms
convert organic material to inorganic forms
convert inorganic materials into organic compounds
do not breakdown organic compounds
What is the job of a decomposer?
To break down dead plants and animals
Plants for animals to feed of from
Plants for animals to feed of from
To produce energy to the plants
What are autotrophic organisms?
Organisms are those that need to ingest organic material to nourish themselves.
Organisms are those that can produce their own food, or rather, that produce organic material from inorganic compounds
A set of all of the ecosystems on the planet.
I don't know
Temperature, light, water, soil, and air are all ________ parts of the environment
Biotic factors
Abiotic factors
Consumers
Producers
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