Advertisements
Advertisements
प्रश्न
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
पर्याय
decomposers
producers
herbivores
carnivores
Advertisements
उत्तर
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called producers.
APPEARS IN
संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
Give reason to justify the following: Flow of energy in a food chain is unidirectional.
List two main components of ecosystem?
The following statement is true or false :
In biology, human beings are called producers.
What are the various steps of food chain called?
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
Write down a food chain in the sea.
At which trophic level a person is feeding when he is eating fish.
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name two zooplanktons.
Match the terms given in column I with the terms given in column II and column III having the same meaning :
| Column I | Column II | Column III |
| (1) Secondary consumer | Herbivore | 1st trophic level |
| (2) Primary consume | Autotroph | 3rd trophic level |
| (3) Producer | Carnivore | 4th trophic level |
| (4) Tertiary consumer | Large carnivore | 2nd trophic level |
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Write the food chain comprising all the organisms mentioned above.
______ are organisms that are able to produce their own organic food.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
