मराठी

What is Meant by a Primary Consumer, Secondary Consumer and a Tertiary Consumer? Give One Example of Each.

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प्रश्न

What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.

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उत्तर

Herbivores that feed on plants are called primary consumers. Example: Insects.
Small carnivores that feed on other animals, especially herbivores, are called secondary consumers. Example: Frogs.
Large carnivores that feed on other animals, especially secondary consumers, are called tertiary consumers. Example: Birds.

             Insects → Frogs → Birds
(Primary consumers)       (Secondary consumers)         (Tertiary consumers)

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पाठ 5: Our Environment - Exercise 1 [पृष्ठ २२६]

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लखमीर सिंह Biology Part 3 [English] Class 10
पाठ 5 Our Environment
Exercise 1 | Q 22 | पृष्ठ २२६

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

List two biotic components of a biosphere.


"Our food grains such as wheat and rice, the vegetables and fruits and even meat are found to contain varying amounts of pesticide residues." State the reason to explain how and why it happens?


At which trophic level a person is feeding when he is eating eggs.


Write one or two word for the following statement/definition :

Organisms which depend on the producers for food either directly or indirectly


Which of the following are decomposers of dead organisms?

Bacteria Fungi Viruses
(a) no yes yes
(b) yes no yes
(c) yes yes  no
(d) yes yes yes

In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers


Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.


Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.


Why are there rarely more than five links (or five organisms) in a food chain?


What is ten per cent law? Explain with an example.


'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term  damage to mankind'. Justify this statement.


 With the help of a food chain, explain how biological magnification of harmful chemicals can occur.


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.


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


The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.


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.


Define – Heterotrophs.


Which statement is correct with respect to the food chain?


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