MCQ
E. coli are used in production of:
- ARifampicin
- BLH
- CEcdysone
- DInterferon
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$a\quad\; b\quad\; c \quad\;d$
$(1)$ 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.
Statement $I$: The presence or absence of hymen is not a reliable indicator of virginity.
Statement $II$: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below :