Advertisements
Advertisements
प्रश्न
Why are plants called producers?
Advertisements
उत्तर
Plants are known as producers because they prepare their food themselves by the process of photosynthesis.
APPEARS IN
संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
"Energy flow in a food chain is unidirectional" Justify this statement.
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Fill in the following blank with suitable word :
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
Write down a food chain in the sea.
At which trophic level a person is feeding when he is eating fish.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
Which of the following statement is incorrect?
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
The sea water contains water beetles, tadpole, fish and weeds.
Write a food chain comprising all the given organisms.
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name two zooplanktons.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
Name two predators of snakes in a food web operating in a forest ecosystem.
The surface of water in a lake appears green due to a layer of tiny free-floating organisms X on its surface. The lake water also contains organisms like water beetle, fish and tadpole. The sun shines over the lake water and provides energy for the functioning of this lake ecosystem.
(a) What could organisms X be?
(b) Write a food chain comprising of all the four organisms mentioned.
(c) What is the general name of the food chains like the one written above?
(d) Name (i) secondary consumer (ii) producer (iii) tertiary consumer, and (iv) primary consumer, in the above food chain.
(e) If the tertiary consumer gets 0.2 J of energy from the secondary consumer, then how much energy was radiated by the sun to the producer?
______ obtained energy from the chemical breakdown of dead organisms.
The sequence of who eats whom in an ecosystem is called as ______.
In a food chain grasshopper gets energy by eating frog.
Define – Heterotrophs.
