Question
Which of the following structures in Pinus are haploid
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Statement $I$ : Bt toxins are insect group specific and coded by a gene cry $IAc$.
Statement $II$ : Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic $\mathrm{pH}$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:
$a$ - animal, $b$- viroids, $c$-bacteria $d$ - virus, $e$ - algae.