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प्रश्न
The following statement is true or false :
In biology, human beings are called producers.
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उत्तर
False. Green plants are known as producers.
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संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
Which of the following constitute a food-chain?
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
What is a trophic level?
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
At which trophic level a person is feeding when he is eating bread.
What is a food chain?
In a food chain, the initial organism is usually :
(a) photosynthetic
(b) herbivore
(c) saprophytic
(d) parasitic
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
Fill in the following blank with suitable word :
Plants → Antelope → ............
'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term damage to mankind'. Justify this statement.
Will the levels of biological magnification be different at different levels of the ecosystem?
Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 500 kJ
(b) 50 kJ
(c) 5000 kJ
(d) 5 kJ
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.
(a) In which organisms the pesticides enter from the polluted water? What is this level of organisms known as?
The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as ______.
Analogy:
Primary Consumer: Goat, Cow:: Secondary Consumer: ______.
