Biology [PYQs Based Test-10]

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1.
Which of the following structures are present in the throat to prevent the air passage from collapsing?
2.
In coriander, the useful parts are ____:
3.
An eardrum is absent in ____:
4.
Which gas is major contributor to greenhouse effect?
5.
Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in ____: