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प्रश्न
Fill in the following blank with suitable word :
Pesticides enter the food chain at the ...........level
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उत्तर
Pesticides enter the food chain at the producer level.
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संबंधित प्रश्न
The first trophic level in a food chain is always a green plant. Why ?
What will happen if we kill all the organisms in one trophic level?
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
At which trophic level a person is feeding when he is eating bread.
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Which of the following group of organisms are not constituents of a food chain?
- grass, lion, rabbit, wolf
- plankton, man, fish, grasshopper
- wolf, grass, snake, tiger
- frog, snake, eagle, grass, grasshopper
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
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A food chain occurring in the sea which provides food for many people can be written as: phytoplankton → zooplankton → X → Y |
- Name one phytoplankton.
- Name two zooplanktons.
- What could be Х?
- Name the organism which Y could be.
- Which organism in the above food chain is a (i) primary consumer, and (ii) tertiary consumer?
Fill in the following blank with suitable word :
Plants → Antelope → ............
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
What are autotrophs?
Differentiate between herbivores and carnivores.
Which statement is correct with respect to the food chain?
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
Primary consumers are characterized as:
According to the 10% law, if producers in an ecosystem have 10,000 units of energy, approximately how much energy is available to primary consumers?
