Food chain and food web
Aquarium is which type of ecosystem?
Artificial ecosystem
An animal like a kite come in which trophic level in grassland ecosystem
V Trophic level
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
5000kJ
Ozone is the form of which element?
Oxygen
when world environment day is celebrated?
on 5th june
Give one example of a food chain having four organisms.
aquatic plant-> small fish --> large fish --> Crane
or
plant --> rat --->snake-->eagle
Which of the following limits the number of trophic levels in a food chain?
Decrease in energy at higher trophic level
What will be the energy available at the producer level in a given food chain if the amount of energy at fourth trophic level is 6 kj?
6000kJ
Is ozone is toxic substances?
Yes
The substances do not decompose.
Non- biodegradable
In the food chain given below, which organisms will be the least in numbers? Algae –protozoa – small fish – large fish
large fish
in the given names of organisms which one from the following is primary consumer.
plant, fox, tiger and rabbit
Rabbit
The amount of energy that flow from one trophic leve; to another in a food chain is
10%
Some chemicals Z released from the various devices, like refrigerator, AC, and aircraft engine on the earth are destroying the layer of ozone slowly.
what is Z
Chlorofluorocarbons/ CFCs
Dry waste can be managed by the process of?
3 R - reduce, reuse and recycle
1 Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
Bio-logical- magnification
The natural interconnection of the food chains in the ecosystem forms a ...
Food web
DDT was sprayed in a lake to regulate the breeding of mosquitoes . in which trophic level highest amount of DDT particle will reach?
Hawk
large fish
small fish
plankton
Aquatic environment
In Hawk
The gas "A" is udsed by most of the animals to obtain energy from food by the process of respiration, when "A" is acted upon by radiation UV it converted into another gas "B"
oxygen and Ozone
Substances that can be Broken down by biological processes are said to be
Biodegradable waste
The sea water contains water beetles, tadpole, fish and weeds. Which organism is a secondary consumer?
water beetles
What is the percentage of solar energy that they convert into organic compound?
1%
What would be happen to the number of rabbits and grass plants if the number of foxes decrease?
increased
A hole has been formed in layer ozone over the area 'D' of the earth , Name the area 'D'
Antarctica
Replacing of plastic cups by the paper cups for selling tea on train is preferred because
paper cups are biodegradable