Most dinosaurs and pterosaurs become extinct at the close of the __________ era.

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#Question id: 9585

#6. System Physiology – Plant

In light reaction the reaction centre of PSII  receives electron from water molecules by splitting into oxygen, If 5 oxygen molecules evolved per 50 quanta was

absorbed then what is the quantum yield?

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#Question id: 4310

#3. Fundamental Processes

Which of the following processes destroys RNA molecules in a cell if they have a sequence complementary to an introduced double-stranded RNA?

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#Question id: 8862

#9. Diversity of Life Forms

The members of which class of the phylum Cnidaria occur only as polyps?

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#Question id: 356

#1. Molecules and their Interaction Relevant to Biology

How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?

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#Question id: 24123

#Aptitude

Even under tremendous public pressure, the planning committee would not commit itself wholeheartedly to the proposal and gave only tentative approval to the waterfront development plan.