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प्रश्न
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
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उत्तर
Snakes belong to the third trophic level and hawks belong to the fourth trophic level in the food chain.
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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?
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Name one decomposer.
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
What will happen if we kill all the organisms in one trophic level?
Construct a long food chain.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
Give one example of a simple food chain.
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
What could be X?
Fill in the following blank with suitable word :
Plants → Antelope → ............
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
| Human body is made up of five important components, of which water is the main component. Food, as well as potable water, are essential for every human being. The food is obtained from plants through agriculture. Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradables, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body. |
- Why is the maximum concentration of pesticides found in human beings? (1)
- Give one method which could be applied to reduce our intake of pesticides through food to some extent. (1)
- Various steps in a food chain represent: (1)
- Food web
- Trophic level
- Ecosystem
- Biomagnification
- With regard to various food chains operating in an ecosystem, man is a: (1)
- Consumer
- Producer
- Producer and consumer
- Producer and decomposer
In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Natural agents like ______ are the decomposition factors breaking complex forms into simpler units.
Differentiate between herbivores and carnivores.
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Which statement is correct with respect to the food chain?
