MCQ
Highest level of biological hierarchy in the given options is
- ✓Biome
- BEcosystem
- CIndividual
- DSpecies
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$‘A’ $ $ ‘B’$
$(1) $ Auxin $(I)$ Ripening and maturity of fruits
$(2)$Gibberellin $(II)$Differentiation of xylem elements
$(3) $ Cytokinin $(III)$ Prevention of genetic and physiological dwarfism
$(4) $ Ethylene $(IV)$ Found from tumour tissue of tobacco
$(1)$ $(2)$ $(3)$ $(4)$
$(i)$ It causes potato spindle tuber disease.
$(ii)$ It has free $RNA.$
$(iii)$ Molecular weight of $RNA$ is low. Identify the infections agent.
