- APavo cristatus
- BMilvus migrans
- CParadise flycatcher
- DPasser domesticus
Explanation:
Indian peacock (Pavo cristatus) is designated as the national bird of India.
A bird indigenous to the subcontinent, peacock represents the unity of vivid colors and finds references in Indian culture.
The male grows colourful feathers on tail during breeding season to impress the female birds.
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$R$ - The lower the $BOD$ of water, lower is its polluting potentials.
$(I)$ Use of bio resources by multinational companies and organization without proper authorization from the country and people concerned compensatory payment.
$(II)$ Traditional knowledge related to bio-resources can be exploited of Their bio-resources.
$(III)$ Nations are developing laws to prevent the unauthorized exploitation of Their bio-resources.
$(1)$ The trophic levels in $GFC$ are unlimited
$(2)$ Organisms at each trophic level depend on those at the higher trophic level for their energy demands.
$(3)$ Plants capture only $2 -10$ percent of $PAR$.
$(4)$ All organisms are dependent for their food on producers, either directly or indirectly.
Reason : $DNA$ binds around histone proteins that form a pool and the entire structure is called a nucleosome.